Village in Ross County, Ohio · 0.3 sq mi · 1,136 people per sq mi
311 people live in Adelphi. The typical household earns $39,107, and the median resident is 41 years old.
2026 projection
From 322 in 2020
Poverty rate 26.11%
Men 33.3 · Women 46.6
2010–2026
311
2026 projection
3.4% 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.
2010–2026
311
2026 projection
3.4% 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 | 311 | -2 | 0.64% |
|---|---|---|---|
| 2025 | 313 | +1 | 0.32% |
| 2024 | 312 | -3 | 0.95% |
| 2023 | 315 | 0 | 0.00% |
| 2022 | 315 | -2 | 0.63% |
| 2021 | 317 | -5 | 1.55% |
| 2020 | 322 | -3 | 0.92% |
| 2019 | 325 | -3 | 0.91% |
| 2018 | 328 | -7 | 2.09% |
| 2017 | 335 | -6 | 1.76% |
Showing 10 of 17 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.
Adelphi has a population change lower than Ross County, Ohio, 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 3 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
33% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 33% | 33% | 33% |
| Never married | 43% | 58% | 30% |
| Divorced | 15% | 3% | 25% |
| Widowed | 7% | 6% | 8% |
| Separated | 2% | 0% | 4% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources