the diversity provided by a large number of industrial, service, retail and high technology businesses. Other employment is provided by a variety of wholesale trade, manufacturing, federal, state and local governments, hospitals and utilities.
According to the U.S. Census Bureau, as of July 1, 2022, (i) Bucks County had an estimated population of 645,984, representing a 0.1% decrease from April 1, 2020, and a median household income of $107,826 and (ii) Philadelphia County had an estimated population of 1.6 million, representing a 3.3% decrease from April 1, 2020, and a median household income of $57,537. In addition, (i) Burlington County had an estimated population of 469,167, representing a 1.6% increase from April 1, 2020, and a median household income of $102,615, (ii) Camden County had an estimated population of 527,196, representing a 0.7% increase from April 1, 2020, and a median household income of $82,005, (iii) Gloucester County had an estimated population of 308,423, representing a 2.0% increase from April 1, 2020, and a median household income of $99,668 and (iv) Mercer County had an estimated population of 381,671, representing a 1.5% decrease from April 1, 2020, and a median household income of $92,697. As of July 1, 2022, the median household income in the United States was $75,149.
As of June 2024, the unemployment rate in Bucks and Philadelphia Counties totaled 3.2% and 4.7%, respectively, and the unemployment rate in Burlington, Camden, Gloucester, and Mercer Counties totaled 4.2%, 5.1%, 4.6%, and 4.4%, respectively, as compared to a national unemployment rate of 4.3% for June 2024.
Competition
We face significant competition for the attraction of deposits and origination of loans. Our most direct competition for deposits and loans has historically come from the numerous national, regional and local community financial institutions operating in our market area, including a number of independent banks and credit unions, in addition to other financial service companies, such as brokerage firms, mortgage companies and mortgage brokers. In addition, we face competition for investors’ funds from money market funds and other corporate and government securities. Competition for loans also comes from the increasing number of non-depository financial service companies entering the mortgage and consumer credit market, such as financial technology companies, securities companies and specialty finance companies. We believe that our long-standing presence in Bucks County, Southern and Central New Jersey, and Northeast Philadelphia, and our personal service philosophy enhance our ability to compete favorably in attracting and retaining individual and business customers. We actively solicit deposit-related customers and compete for deposits by offering customers personal attention, professional service and competitive interest rates.
Lending Activities
Our loan portfolio consists primarily of one- to four-family residential mortgage loans, one- to four-family investor commercial real estate loans, and commercial non-residential real estate loans. Our loan portfolio also includes multi-family residential loans, home equity loans and lines of credit, residential construction, commercial business, commercial construction and land and consumer loans. Substantially all of our loans are secured by properties located within our local markets.
One- to Four-Family Residential Loans. One of our primary lending activities is the origination of mortgage loans to enable borrowers to purchase or refinance existing homes in our market area. Such loans totaled $127.9 million, or 27.0% of our total loan portfolio, at June 30, 2024.
We offer fixed-rate and adjustable-rate mortgage loans with terms up to 30 years. Borrower demand for adjustable-rate loans rather than fixed-rate loans is a function of the level of interest rates, the expectations of changes in the level of interest rates, the difference between the interest rates and loan fees offered for fixed-rate mortgage loans and the initial period interest rates and loan fees for adjustable-rate loans. The relative amount of fixed-rate mortgage loans (as opposed to adjustable interest rates) and adjustable-rate mortgage loans that can be originated or purchased at any time is largely determined by the demand for each in a competitive environment and the effect each has on our interest rate risk. The loan fees charged, interest rates, and other provisions of mortgage loans are determined by us on the basis of our own pricing criteria and competitive market conditions.
We offer fixed-rate loans with terms of either 10, 15, 20 or up to 30 years. Our adjustable-rate mortgage loans are also based on a 10, 15, 20 or up to 30 year amortization schedule. Interest rates and payments on our adjustable-rate mortgage loans adjust every three, five, seven or ten years. Interest rates and payments on our adjustable-rate loans generally are adjusted to a rate that is based on the respective three, five, seven or ten year monthly Constant Maturity U.S. Treasury indices.
Throughout the low interest rate environment that extended through 2021, borrowers generally preferred fixed-rate loans. However, due to the recent rise in interest rate levels in 2022 and 2023, borrowers generally currently prefer our adjustable-rate loan products. We anticipate that an increase in adjustable-rate loans would allow us to better offset the adverse effects on our net interest income of an