City in Clay County, South Dakota · 4.7 sq mi · 2,521 people per sq mi
11,750 people live in Vermillion. The typical household earns $50,456, and the median resident is 23.1 years old.
2026 projection
From 11,695 in 2020
Poverty rate 24.36%
Men 23.7 · Women 22.7
1880–2026
11,750
2026 projection
0.5% since 2020 (increase)
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.
1880–2026
11,750
2026 projection
0.5% since 2020 (increase)
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 | 11,750 | +30 | 0.26% |
|---|---|---|---|
| 2025 | 11,720 | -123 | 1.04% |
| 2024 | 11,843 | -107 | 0.90% |
| 2023 | 11,950 | +42 | 0.35% |
| 2022 | 11,908 | +52 | 0.44% |
| 2021 | 11,856 | +161 | 1.38% |
| 2020 | 11,695 | +149 | 1.29% |
| 2019 | 11,546 | +247 | 2.19% |
| 2018 | 11,299 | -8 | 0.07% |
| 2017 | 11,307 | +139 | 1.24% |
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.
Vermillion has a population change lower than Clay County, South Dakota, 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 119 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 4 residents
28% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 28% | 28% | 28% |
| Never married | 63% | 64% | 62% |
| Divorced | 6% | 7% | 4% |
| Widowed | 3% | 1% | 5% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources