LETTER TO CLIENTS

                           OFFER TO PURCHASE FOR CASH

                                       by

                             STEELTON BANCORP, INC.

                     UP TO 90,000 SHARES OF ITS COMMON STOCK
   AT A PURCHASE PRICE NOT GREATER THAN $16.25 NOR LESS THAN $14.25 PER SHARE

THE OFFER AND  WITHDRAWAL  RIGHTS  WILL EXPIRE AT 5:00 P.M. , EASTERN  TIME,  ON
THURSDAY, AUGUST 16, 2001, UNLESS THE OFFER IS EXTENDED.  STEELTON BANCORP, INC.
MAY EXTEND THE OFFER PERIOD AT ANY TIME.

                                                   July 19, 2001

To Our Clients:

         Enclosed for your  consideration are the offer to purchase,  dated July
19, 2001, and the related letter of transmittal in connection  with the offer by
Steelton Bancorp, Inc., a Pennsylvania corporation,  to purchase for cash 90,000
shares of its common  stock,  par value $0.10 per share,  at a price not greater
than $16.25 nor less than $14.25 per share,  net to the seller in cash,  without
interest, as specified by shareholders tendering their shares.

         Given the prices specified by tendering  shareholders and the number of
shares tendered and not properly withdrawn,  Steelton Bancorp,  Inc. will select
the  lowest  purchase  price  between  $14.25  and $16.25 net per share in cash,
without interest,  that will allow it to purchase 90,000 shares, or, if a lesser
number of shares are properly  tendered,  all shares that are properly tendered.
All shares acquired in the tender offer will be purchased at the same price.

         Steelton Bancorp, Inc.'s offer is being made upon the terms and subject
to the conditions  set forth in its offer to purchase,  dated July 19, 2001, and
in the  related  letter  of  transmittal  which,  as  they  may be  amended  and
supplemented from time to time, together constitute the tender offer.

         Only shares properly  tendered at prices equal to or below the purchase
price and not properly  withdrawn  will be  purchased.  However,  because of the
proration  provisions  described  in the offer to  purchase,  all of the  shares
tendered at or below the purchase price may not be purchased if more than 90,000
shares are properly tendered.  All shares tendered and not purchased,  including
shares  tendered at prices  above the  purchase  price and shares not  purchased
because of proration or the conditional tender  procedures,  will be returned at
Steelton Bancorp, Inc.'s expense as soon as practicable following the expiration
date.

         Steelton Bancorp,  Inc. reserves the right, in its sole discretion,  to
purchase  more than 90,000 shares  pursuant to the offer,  subject to applicable
law. Upon the terms and conditions of Steelton  Bancorp,  Inc.'s offer,  if more
than  90,000  shares  are  properly  tendered  at  prices  equal to or below the
purchase price and not properly withdrawn,  Steelton Bancorp, Inc. will purchase
properly tendered shares in the following order:

          o    First, all shares properly tendered and not properly withdrawn by
               any "odd lot holder" (as defined below) who:

               o    tenders all shares owned  (beneficially or of record) by the
                    odd lot  holder at a price  equal to or below  the  purchase
                    price  (tenders  of less than all the shares  owned will not
                    qualify for this preference); and

                                     Page 1





               o    completes  the section  entitled "Odd Lots" in the letter of
                    transmittal and, if applicable,  in the notice of guaranteed
                    delivery; and

          o    Second, after the purchase of all the shares properly tendered by
               odd lot holders and subject to the conditional  tender procedures
               described in section 5 of the offer to purchase, all other shares
               properly tendered at prices equal to or below the purchase price,
               on a  pro  rata  basis  with  appropriate  adjustments  to  avoid
               purchases of fractional shares.

         A TENDER OF YOUR  SHARES CAN BE MADE ONLY BY US AS THE HOLDER OF RECORD
AND PURSUANT TO YOUR INSTRUCTIONS. THE LETTER OF TRANSMITTAL IS FURNISHED TO YOU
FOR YOUR  INFORMATION  ONLY AND CANNOT BE USED BY YOU TO TENDER YOUR SHARES HELD
BY US FOR YOUR ACCOUNT.

         Accordingly,  please use the attached "Instruction Form" to instruct us
as to  whether  you wish us to tender  any or all of the shares we hold for your
account on the terms and subject to the conditions of the tender offer.

         WE CALL YOUR ATTENTION TO THE FOLLOWING:

          1.   You may tender  shares at prices not in excess of $16.25 nor less
               than $14.25 per share as indicated  in the  attached  Instruction
               Form, net to you in cash, without interest.

          2.   You should consult with your broker  regarding the possibility of
               designating  the  priority in which your shares will be purchased
               in the event of proration.

          3.   The tender offer is not  conditioned  upon any minimum  number of
               shares being tendered.  The tender offer is, however,  subject to
               certain other conditions described in the offer to purchase.

          4.   The tender offer and withdrawal  rights will expire at 5:00 p.m.,
               Eastern  time on  Thursday,  August  16,  2001,  unless  Steelton
               Bancorp, Inc. extends the tender offer.

          5.   The tender offer is for 90,000 shares, constituting approximately
               25% of the shares outstanding as of July 19, 2001.

          6.   Tendering  shareholders  who are registered  shareholders  or who
               tender their shares  directly to Illinois Stock Transfer  Company
               as the  depositary,  will not be obligated  to pay any  brokerage
               commissions or fees,  solicitation  fees, or, except as set forth
               in the offer to  purchase  and the letter of  transmittal,  stock
               transfer  taxes on Steelton  Bancorp,  Inc.'s  purchase of shares
               under the tender offer.

          7.   If you are an odd lot holder,  meaning that you own  beneficially
               or of record  an  aggregate  of fewer  than 100  shares,  and you
               instruct  us to tender on your behalf all such shares at or below
               the purchase price before the  expiration  date and check the box
               captioned "Odd Lots" in the attached  instruction form,  Steelton
               Bancorp,  Inc.,  upon the terms and subject to the  conditions of
               the tender offer, will accept all such shares for purchase before
               proration,  if any,  of the  purchase  of other  shares  properly
               tendered  at  or  below  the  purchase  price  and  not  properly
               withdrawn.

                                     Page 2




          8.   If you  wish to  tender  portions  of your  shares  at  different
               prices,  you must complete a separate  Instruction  Form for each
               price at which  you wish to  tender  each  such  portion  of your
               shares.  We must submit  separate  letters of transmittal on your
               behalf for each price you will accept.

          9.   The board of directors of Steelton Bancorp, Inc. has approved the
               tender offer.  However,  neither Steelton  Bancorp,  Inc. nor its
               board  of  directors   nor  the   information   agent  makes  any
               recommendation  to  shareholders as to whether they should tender
               or not tender  their shares or as to the price or prices at which
               shareholders may choose to tender their shares. Shareholders must
               make their own decision as to whether to tender their shares and,
               if so, how many shares to tender and the price or prices at which
               such  shares  should  be  tendered.   Steelton  Bancorp,   Inc.'s
               directors and executive  officers have advised Steelton  Bancorp,
               Inc.  that they do not  intend to tender any shares in the tender
               offer.

          10.  If you wish to have us tender any or all of your  shares,  please
               so instruct us by completing,  executing, detaching and returning
               to us the  attached  Instruction  Form.  If you  authorize  us to
               tender your  shares,  we will  tender all such shares  unless you
               specify otherwise on the attached Instruction Form.

         Please forward your Instruction Form to us as soon as possible to allow
us ample time to tender your shares on your behalf  prior to the  expiration  of
the offer.

         The tender  offer is being made solely  under the offer to purchase and
the related  letter of  transmittal  and is being made to all record  holders of
shares. The tender offer is not being made to, nor will tenders be accepted from
or on behalf of,  holders of shares  residing in any  jurisdiction  in which the
making of the tender offer or acceptance thereof would not be in compliance with
the securities, blue sky or other laws of such jurisdiction.

                                     Page 3



                                INSTRUCTION FORM

           INSTRUCTIONS FOR TENDER OF SHARES OF STEELTON BANCORP, INC.

         By signing this instruction form you acknowledge  receipt of our letter
and the enclosed offer to purchase,  dated July 19, 2001, and the related letter
of  transmittal  in  connection  with the offer by  Steelton  Bancorp,  Inc.,  a
Pennsylvania  corporation,  to purchase  shares of its common  stock,  $0.10 par
value per share.  Steelton  Bancorp,  Inc.  is offering to purchase up to 90,000
shares at a price not greater than $16.25 nor less than $14.25 per share, net to
the seller in cash,  without  interest,  as specified by shareholders  tendering
their shares.  Steelton  Bancorp,  Inc.'s offer is being made upon the terms and
subject to the  conditions set forth in the offer to purchase and in the related
letter of transmittal,  which, as they may be amended or supplemented  from time
to time, together constitute the offer.

         This will  instruct us to tender to  Steelton  Bancorp,  Inc.,  on your
behalf,  the  number of  shares  indicated  below (or if no number is  indicated
below,  all shares) which are  beneficially  owned by you but  registered in our
name, upon the terms and subject to the conditions of the offer.

         Number of shares to be tendered:

         ___________________ shares.  (Unless otherwise indicated, it will be
                                      assumed that all shares held by us for
                                      us for your account are to be tendered.)

                        PRICE AT WHICH YOU ARE TENDERING
                (SEE INSTRUCTION 5 TO THE LETTER OF TRANSMITTAL)

You must check one box and only one box if you want to tender  your  shares.  If
more than one box is checked or if no box is  checked,  your  shares will not be
properly tendered.

SHARES TENDERED AT A PRICE DETERMINED BY YOU:

By checking one of the  following  boxes below  instead of the box under "Shares
tendered at a price determined  pursuant to the offer," you are tendering shares
at the price  checked.  This action  could  result in none of your shares  being
purchased  if the  purchase  price  selected by Steelton  Bancorp,  Inc. for the
shares is less than the price checked below.  If you want to tender  portions of
your  shares at more than one price,  you must  complete  a  separate  letter of
transmittal for each price at which you tender shares. The same shares cannot be
tendered at more than one price.

         PRICE (IN DOLLARS) PER SHARE AT WHICH SHARES ARE BEING TENDERED

             [ ] $14.25             [ ] $15.00           [ ] $15.75
             [ ] $14.50             [ ] $15.25           [ ] $16.00
             [ ] $14.75             [ ] $15.50           [ ] $16.25

                                       OR

SHARES TENDERED AT A PRICE DETERMINED PURSUANT TO THE OFFER:

[ ]  By checking  this one box instead of one of the price boxes above,  you are
     tendering  shares and are willing to accept the purchase  price selected by
     Steelton  Bancorp,  Inc. in  accordance  with the terms of the offer.  This
     action will maximize the chance of having Steelton  Bancorp,  Inc. purchase
     your shares  (subject to the  possibility of  proration).  Note this action
     could result in your receiving a price per share as low as $14.25.

                                     Page 4



                                    ODD LOTS
                (SEE INSTRUCTION 8 TO THE LETTER OF TRANSMITTAL)

Complete this section only if you own, or are tendering on behalf of a person
who owns, beneficially or of record, an aggregate of fewer than 100 shares and
are tendering all of your shares.

You either (check one box):

[ ]  are the  beneficial  or  record  owner of an  aggregate  of fewer  than 100
     shares, all of which are being tendered; or

[ ]  are a broker, dealer, commercial bank, trust company, or other nominee that
     (a) is tendering for the beneficial owner(s),  shares with respect to which
     it is the record holder, and (b) believes,  based upon representations made
     to it by the beneficial  owner(s),  that each such person is the beneficial
     owner of an aggregate of fewer than 100 shares and is tendering  all of the
     shares.

                               CONDITIONAL TENDER
                (SEE INSTRUCTION 15 TO THE LETTER OF TRANSMITTAL)

You may condition your tender of shares on Steelton Bancorp, Inc. purchasing a
specified minimum number of your tendered shares, all as described in section 5
of the offer to purchase. Unless the minimum number of shares you indicate below
is purchased by Steelton Bancorp, Inc. in the offer, none of the shares you
tendered will be purchased. It is your responsibility to calculate that minimum
number of shares that must be purchased if any are purchased, and you are urged
to consult your own tax advisor before completing this section. Unless this box
has been checked and a minimum number of shares specified, your tender will be
deemed unconditional.

[ ]  The minimum number of shares that must be purchased,  if any are purchased,
     is: ____________ shares.

If because of proration, the minimum number of shares that you designated above
will not be purchased, Steelton Bancorp, Inc. may accept conditional tenders by
random lot, if necessary. However, to be eligible for purchase by random lot,
you must have tendered all your shares and checked this box:

[ ]  The tendered shares represent all shares held by me.

         THE METHOD OF  DELIVERY  OF THIS  DOCUMENT IS AT THE OPTION AND RISK OF
THE TENDERING  SHAREHOLDER.  IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN
RECEIPT REQUESTED,  PROPERLY INSURED, IS RECOMMENDED.  IN ALL CASES,  SUFFICIENT
TIME SHOULD BE ALLOWED TO ASSURE DELIVERY.

SIGN HERE:

Signature(s): _______________________________________________________

Print Name(s): ______________________________________________________

Address(es): ________________________________________________________

Area Code and Telephone Number: _____________________________________

Taxpayer Identification or Social Security Number: __________________
Date: ______________________, 2001

                                     Page 5