Fort Mill Population

1880–2026

41,426

2026 projection

68.9% since 2020 (increase)

010K20K30K40K50K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Fort Mill. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202641,426+2,7537.12%
202538,673+2,4666.81%
202436,207+2,6337.84%
202333,574+2,7288.84%
202230,846+2,91610.44%
202127,930+3,40913.90%
202024,521+1,9798.78%
201922,542+2,55812.80%
201819,984+2,33213.21%
201717,652+2,41015.81%

Showing 10 of 30 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Fort Mill is growing faster than Lancaster County, South Carolina, and the U.S.

  • Fort Mill+53.5%
  • Lancaster County+18.3%
  • South Carolina+8.5%
  • United States+3.1%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Fort Mill Demographics

38.4median age

Median age

Female38.3 yrs
Male38.4 yrs

Adults

21,490
3,847 seniors (65+) · 18% of adults17,643 other adults

Sex

Female 51.5% · 15,836Male 48.5% · 14,939

Population by age

MaleFemale85+ years, male: 13585+ years, female: 2980–84 years, male: 28280–84 years, female: 18075–79 years, male: 32375–79 years, female: 45970–74 years, male: 57070–74 years, female: 55865–69 years, male: 45765–69 years, female: 85460–64 years, male: 74760–64 years, female: 94855–59 years, male: 84155–59 years, female: 78650–54 years, male: 76450–54 years, female: 1,01645–49 years, male: 1,15445–49 years, female: 1,29740–44 years, male: 1,76740–44 years, female: 1,43835–39 years, male: 1,24035–39 years, female: 1,25830–34 years, male: 70930–34 years, female: 1,06625–29 years, male: 51225–29 years, female: 77920–24 years, male: 16020–24 years, female: 45115–19 years, male: 1,28115–19 years, female: 1,33310–14 years, male: 1,44610–14 years, female: 1,4075–9 years, male: 1,4185–9 years, female: 1,1160–4 years, male: 1,1330–4 years, female: 86185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 308 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Fort Mill Income

$121,823median household income

Median household income

$121,823

Half of households earn more, half earn less

Median earnings

$72,284

Typical yearly pay for a worker 25 or older.

Poverty rate

4.8%

About 1 in 21 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Fort Mill Marital Status

62% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married62%68%57%
Never married25%23%26%
Divorced9%6%12%
Widowed3%2%4%
Separated2%2%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources