City in St. Louis County, Missouri · 1.1 sq mi · 4,216 people per sq mi
4,652 people live in Rock Hill. The typical household earns $95,372, and the median resident is 37.5 years old.
2026 projection
From 4,750 in 2020
Poverty rate 5.2%
Men 37.4 · Women 37.6
1930–2026
4,652
2026 projection
2.1% since 2020 (decrease)
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.
1930–2026
4,652
2026 projection
2.1% since 2020 (decrease)
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.
| 2026 | 4,652 | -16 | 0.34% |
|---|---|---|---|
| 2025 | 4,668 | -8 | 0.17% |
| 2024 | 4,676 | +6 | 0.13% |
| 2023 | 4,670 | -10 | 0.21% |
| 2022 | 4,680 | -38 | 0.81% |
| 2021 | 4,718 | -32 | 0.67% |
| 2020 | 4,750 | +6 | 0.13% |
| 2019 | 4,744 | +7 | 0.15% |
| 2018 | 4,737 | +6 | 0.13% |
| 2017 | 4,731 | +2 | 0.04% |
Showing 10 of 25 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.
Rock Hill has a population change lower than St. Louis County, Missouri, and the U.S.
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.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 47 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
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 19 residents
49% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 49% | 57% | 42% |
| Never married | 35% | 30% | 40% |
| Divorced | 10% | 11% | 9% |
| Widowed | 6% | 2% | 9% |
| Separated | <1% | 0% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources