January 19, 2007


United States Securities and
Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549
Attn:  John P. Nolan
       Accounting Branch Chief

                     Re:   Carrollton Bancorp (the "Company")
                           Form 10-K for the fiscal year ended December 31, 2005
                           Filed March 24, 2006
                           Form 10-Q for fiscal quarter ended September 30, 2006
                           File No. 000-23090
                           -----------------------------------------------------

Dear Mr. Nolan:

     This  will  acknowledge  receipt  of,  and thank  you for,  your  letter of
December  15,  2006 (the  "Comment  Letter")  containing  your  comments  on the
above-referenced  filings (the "December 31, 2005 Form 10-K"; the "September 30,
2006 Form 10-Q").

     We have the  following  responses  to the comments set forth in the Comment
Letter:

         Comment 1.

         Form 10-K for the fiscal year ended December 31, 2005

         Management's Discussion and Analysis

         Business and Overview, page 18

     1. We note your  disclosure  regarding  net income  excluding  the gains of
sales of securities,  FHLBA prepayment  penalty,  and the write down and cost of
disposal of ATMs.  We also note your  disclosure  of "core  earnings" on page 19
that represents earnings before the effect of investment security  transactions.
Please refer to Item 10(e) of Regulation S-K and tell us the following regarding
each non-GAAP measure:

     o    your conclusion as to whether each item is recurring or  non-recurring
          in nature;

     o    how management uses the measure to conduct or evaluate your business;

     o    the  economic  substance  behind  management's  decision to use such a
          measure;

     o    the material limitations associated with use of the non-GAAP financial
          measure as compared to the use of the most  directly  comparable  GAAP
          financial measure;

     o    the manner in which management  compensates for these limitations when
          using the non-GAAP financial measure;

     o    the substantive reasons why management believes the non-GAAP financial
          measure provides useful information to investors; and

     o    how the title or description of the non-GAAP financial measures is not
          the same as, or confusingly  similar to, titles or  descriptions  used
          for GAAP financial measures.

     Response: The write down and cost of disposal of the ATMs totaling $564,000
     related to Wal-Mart  terminating  the  agreement  for  Carrollton  Bank,  a
     wholly-owned  subsidiary  of the Company (the  "Bank"),  to provide ATMs at
     Wal-Mart, Sam's Club, and Wal-Mart Super Centers in Maryland,  Virginia and
     West Virginia.  Currently,  the Bank has no other  contracts of this nature
     and has not had any other such contracts over the past 2 years.  Therefore,
     this charge is considered non-recurring in nature.

     The Bank paid off the $5 million  FHLBA  advance at 7.26%  maturing May 24,
     2010 and incurred a $506,000 prepayment  penalty.  The Bank has not entered
     into any long term  borrowings in 2006.  Since the advance was paid off, it
     would be considered non-recurring in nature.

     During the year ended  December 31,  2005,  the Company  realized  gains of
     $840,000 from the sale of marketable  securities.  The Company  maintains a
     portfolio of marketable securities available for sale (the "AFS Portfolio")
     and may  periodically  sell securities  from the AFS Portfolio.  On July 7,
     2005, the Company  repurchased  42,500 shares of its outstanding  stock for
     approximately $599,000.  Simultaneously,  on July 7, 2005, the Company sold
     marketable  securities  (consisting  of shares of  publicly  traded  common
     stock) from its AFS  Portfolio in order to provide the cash for the Company
     to repurchase  its shares and to pay  estimated  federal and state taxes on
     the  gain  realized  from  the sale of such  marketable  securities.  These
     transactions  would be  considered  recurring  in nature.  We believe  that
     presentations  of  non-GAAP  financial  measures  excluding  certain  items
     provide  useful  supplemental  information  to analysts and investors  that
     better reflect our core operating  activities.  Moreover,  we believe these
     measures are consistent with how investors and analysts  typically evaluate
     our  industry  and by  providing  such  information,  we  facilitate  their
     analysis.

     Management  considers  whether the transaction would be recurring in nature
     and how analysts  evaluate the Company when  management  evaluates the core
     earnings of the Company.

     We believe these non-GAAP measures provide  information useful to investors
     in  understanding  our ongoing core  business and  operational  performance
     trends.  These  measures  should  not be viewed as a  substitute  for GAAP.
     Management reviews these same non-GAAP measures internally.

     We do not believe that there are any material  limitations  associated with
     the use of  these  non-GAAP  financial  measures  as  compared  to the most
     directly  comparable  GAAP financial  measures of net income.  Accordingly,
     there are no  limitations  to  compensate  for when  using  these  non-GAAP
     financial measures.

     Certain of the excluded  items have  historically  been recurring in nature
     such as gains and losses on the sale of securities. Furthermore, certain of
     the excluded items including the write down associated with the termination
     of  the  Wal-Mart  ATM  contract  and  the  FHLBA  prepayment  penalty  are
     non-recurring in nature.  We believe that excluding such items  facilitates
     evaluation  and  comparison  of  results  for our  core,  ongoing  business
     operations,  and such items are not excluded to even out our  earnings.  As
     stated above, we believe that  presentations of non-GAAP financial measures
     excluding certain items provide useful supplemental information to analysts
     and investors that better reflect our core operating activities.  Moreover,
     as also stated above,  we believe these  measures are  consistent  with how
     investors  and  analysts  typically  evaluate our industry and by providing
     such  information,  we  facilitate  their  analysis.  We will  continue  to
     evaluate the relevance of these disclosures on an ongoing basis.

     The  description  of the  non-GAAP  financial  measures  is  similar to the
     descriptions used for the GAAP financial measures.  The descriptions of the
     non-GAAP financial measures,  however, are set off from the descriptions of
     the GAAP  financial  measures  by the phrase  "using a  non-GAAP  financial
     measure" which precedes the discussion of non-GAAP financial  measures.  By
     including the additional non-GAAP financial  measures,  management's intent
     was to  facilitate  an investor or analyst's  evaluation  of the  Company's
     results  of  operations  from  year to year.  Management  will  assess  the
     relevance of these disclosures on an ongoing basis.

     Comment  2.  Please  provide  us with a similar  response  related  to your
non-GAAP measures presented in your September 30, 2006 Form l0-Q.

     Response:  The check  kiting  charge  of $1.8  million  referred  to in our
     September 30, 2006 Form 10-Q was incurred as a result of the  activities of
     one of the Bank's commercial customers, which was a money service business.
     The Bank has discontinued  providing  services to money service  businesses
     and has not incurred any other check kiting  charges over the past 2 years.
     Therefore,  the check kiting  charge would be considered  non-recurring  in
     nature  because the  likelihood of a check kiting loss from a money service
     business has been eliminated.

     The Bank  restructured  $35  million  of its total of $40  million in FHLBA
     advances and incurred a prepayment  penalty of $2.3  million.  The weighted
     average  maturity  of  the  $40  million  fixed  rate  FHLBA  advances  was
     approximately  3.9  years.  The  refinancing  of $35  million of fixed rate
     advances reduced the weighted average maturity from approximately 3.9 years
     to less than 6 months.  This transaction is considered  non-recurring since
     it  significantly  reduced  the  weighted  average  maturity  of the  FHLBA
     advances. Under the current ALCO strategy, the weighted average maturity of
     borrowings is not expected to be significantly extended.

     The Company  incurred  gains of $2.2  million  from the sale of  marketable
     securities.  The Company  maintains an AFS Portfolio  and may  periodically
     sell  securities  from the AFS Portfolio.  The  securities  sold during the
     period covered by the September 30, 2006 Form 10-Q had  significant  gains.
     These transactions would be considered recurring in nature.

     Management  considers whether the transactions would be recurring in nature
     and how analysts  evaluate the Company when  management  evaluates the core
     earnings of the Company.

     We believe these non-GAAP  measures  provide  information that is useful to
     investors  in  understanding  our ongoing  core  business  and  operational
     performance trends. These measures should not be viewed as a substitute for
     GAAP. Management reviews these same non-GAAP measures internally.

     We do not believe that there are any material  limitations  associated with
     the use of  these  non-GAAP  financial  measures  as  compared  to the most
     directly  comparable  GAAP financial  measures of net income.  Accordingly,
     there  are no  limitations  to  compensate  for  when  using  the  non-GAAP
     financial measures.

     Certain of the excluded  items have  historically  been recurring in nature
     such as gains and  losses on the sale of  securities.  Although  prepayment
     penalties were incurred on FHLBA advances in 2005 and 2006, the reasons for
     incurring the penalties  were to payoff an advance and to  restructure  the
     weighted  average  maturities  of  long  term  advances.  We  believe  that
     excluding such items  facilitates  evaluation and comparison of results for
     our core, ongoing business  operations,  and such items are not excluded to
     even out our  earnings.  Specifically,  we believe  that  presentations  of
     non-GAAP   financial   measures  excluding  certain  items  provide  useful
     supplemental  information to analysts and investors that better reflect out
     core  operating  activities.  Furthermore,  we believe  these  measures are
     consistent with how investors and analysts  typically evaluate our industry
     and by providing such  information,  we facilitate their analysis.  We will
     continue to  evaluate  the  relevance  of these  disclosures  on an ongoing
     basis.

     The  description  of the  non-GAAP  financial  measures  is  similar to the
     descriptions used for the GAAP financial measures.  The descriptions of the
     non-GAAP financial measures,  however, are set off from the descriptions of
     the GAAP  financial  measures  by the phrase  "using a  non-GAAP  financial
     measure" which precedes the discussion of non-GAAP financial  measures.  By
     including the additional non-GAAP financial  measures,  management's intent
     was to  facilitate  an investor or analyst's  evaluation  of the  company's
     results  of  operations  from  year to year.  Management  will  assess  the
     relevance of these disclosures on an ongoing basis.

     Comment 3. We note your  disclosure  of non-GAAP per diluted  share measure
that excludes gains of sales of securities,  FHLBA prepayment  penalty,  and the
write down and cost of disposal of ATMs. Note that ASR 142 states that per share
data other than that related to net income,  net assets and dividends  should be
avoided in reporting  financial  results.  Although Item 10(e) of Regulation S-K
does not  include  a  prohibition  on the use of per  share  non-GAAP  financial
measures,  ASR 142 requires that the disclosure that explains how these measures
are used by management  and in what way they provide  meaningful  information to
investors  (as the per share  measure  would not depict the amount that  accrues
directly to  shareholders'  benefit) is critical.  Please  confirm that you will
exclude the  disclosure  of non-GAAP  earnings  per share  measures  from future
filings.  Alternatively,  provide us with your proposed  future  disclosure that
clearly addresses the concerns raised in ASR 142. For additional guidance, refer
to Question 11 of the June 13, 2003 Frequently Asked Questions Regarding the Use
of Non-GAAP Financial Measures.

     Response:  We will exclude the  disclosure  of non-GAAP  earnings per share
     measures from future filings.

     Comment  4.  Please  provide  us with a similar  response  related  to your
non-GAAP per share measures presented in your September 30, 2006 Form 10-Q.

     Response:  We will exclude the  disclosure  of non-GAAP  earnings per share
     measures from future filings.

     Comment 5.

     Consolidated Financial Statements

     Note 1 -- Summary of Significant Accounting Policies

     Derivative Instruments and Hedging Activities, page 41

     We note your disclosure that you designated the interest rate floor entered
into in  December  2005 as a cash flow hedge of future cash flows  derived  from
adjustable  rate  home  equity  loans.  Please  provide  us with  the  following
information regarding this hedge:

     o    the specific designated risk being hedged;

     o    the  specific  benchmark  interest  rates  used for the  loans and the
          floor;

     o    how you estimate the cash flows that are hedged;

     o    how you documented with sufficiently specify the hedged cash flows;

     o    how you assess at inception and an on-going basis; and

     o    how you measure  ineffectiveness,  specifically  identify which of the
          three methods described in SFAS 133  Implementation  Issue No. G7 that
          you use.

     Response:  On December  12, 2005,  the Bank  entered into an interest  rate
     floor with a  notional  amount of $10  million  with an  effective  date of
     December  14, 2005 and a scheduled  termination  date of December 14, 2010.
     The premium for the five year floor was $152,000. The floor's floating rate
     option is  USD-Prime  and the floor  strike  rate is 7%.  The Bank is asset
     sensitive  and  has  increased   exposure  in  a  declining  interest  rate
     environment.  The  interest  rate floor will pay the Bank if the  USD-Prime
     interest  rate falls  below the 7% strike  rate.  The floor  floating  rate
     adjusts  quarterly   beginning  March  14,  2006.  The  Bank's  outstanding
     adjustable rate home equity loans adjust the day that USD-Prime  decreases.
     The floor and the home equity loans float off of USD-Prime.  The risk being
     hedged is the interest rate exposure to a decrease in the expected interest
     receipts  of $10  million  principal  of home  equity  loans in a declining
     interest rate environment.

     The cash flows are  estimated  at the  notional  amount  multiplied  by the
     strike rate ($10,000,000 * 7% = $700,000).

     At inception  and at December 31, 2006,  the Bank has  identified  over $20
     million of home equity loans that float at  USD-Prime + 0 margin.  The Bank
     expects this pool of loans to increase over the remaining four years of the
     floor. However, the composition of the loans may change due to prepayments,
     additional  principal  advances under the home equity lines of credit,  new
     home equity loans originated and potential defaults.  The Bank can identify
     the first USD-Prime based interest  payments  received each quarter for the
     next four years that, in the  aggregate  for each quarter,  are payments on
     $10 million  principal of its existing  USD-Prime + 0 margin  floating rate
     home equity loans.  Any USD-Prime + 0 based interest  payments  received by
     the Bank  after  it has  received  payments  on the $10  million  aggregate
     principal would be unhedged interest payments for that quarter.

     At inception and on an on-going basis,  the expected  effectiveness  of the
     hedge was,  and is,  based on the extent  that  changes in  USD-Prime  have
     occurred  during a quarter  compared  to the  actual  date  that  USD-Prime
     decreased during the quarterly reset period. The hedge would be ineffective
     to the extent  that the change in cash flows of the home  equity  loans for
     the quarter was not offset by the change in the cash flows of the floor for
     the portion of the quarter  that the floor rate did not adjust.  Thus,  the
     hedge  will  only be  ineffective  to the  extent  that the  USD-Prime  has
     decreased  below 7% between the 14th of the quarterly  reset period and the
     actual date prime decreased in the quarterly reset period. Pursuant to SFAS
     133  Implementation  Issue No. G7, we utilize the change in  variable  cash
     flows method to measure ineffectiveness. Based on the expected Federal Open
     Market  Committee  (FOMC) meeting dates in 2006, the average number of days
     between a FOMC meeting and the floor  quarterly reset date was 51 days. The
     estimated  cash flow shortfall for 51 days at 25 basis points (0.25%) would
     be $3,493. For subsequent quarters,  the decrease in the cash flow from the
     $10 million of home equity  loans would be offset by the cash flow from the
     floor.



     Carrollton Bancorp hereby acknowledges that:

     o    It is  responsible  for the adequacy and accuracy of the disclosure in
          the filing;

     o    Staff  comments or changes to disclosure in response to staff comments
          do  not  foreclose  the  Securities  and  Exchange   Commission   (the
          "Commission") from taking any action with respect to the filing; and

     o    It may not  assert  staff  comments  as a  defense  in any  proceeding
          initiated by the Commission or any person under the federal securities
          laws of the United States.

     If you believe that our responses to your comments require discussion,  our
Chief Financial  Officer,  James Uveges  (410-536-7308)  and our counsel Charles
Moran of Ballard Spahr Andrews & Ingersoll, LLP (410-528-5689) will be available
to speak with you at your convenience.


                                          Sincerely yours,


                                           /s/Robert A. Altieri
                                           Chief Executive Officer and President