City in Seneca County, Ohio · 7.4 sq mi · 2,405 people per sq mi
About 18,000 people live in Tiffin. The typical household earns $56,198, and the median resident is 34.1 years old.
2026 projection
From 18,026 in 2020
Poverty rate 14.75%
Men 32.3 · Women 36.5
1830–2026
17,750
2026 projection
1.5% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1830–2026
17,750
2026 projection
1.5% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 17,750 | -53 | 0.30% |
|---|---|---|---|
| 2025 | 17,803 | -13 | 0.07% |
| 2024 | 17,816 | -12 | 0.07% |
| 2023 | 17,828 | -46 | 0.26% |
| 2022 | 17,874 | -100 | 0.56% |
| 2021 | 17,974 | -52 | 0.29% |
| 2020 | 18,026 | +484 | 2.76% |
| 2019 | 17,542 | +28 | 0.16% |
| 2018 | 17,514 | -4 | 0.02% |
| 2017 | 17,518 | +3 | 0.02% |
Showing 10 of 35 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 178 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 7 residents
35% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 35% | 38% | 32% |
| Never married | 43% | 49% | 37% |
| Divorced | 13% | 8% | 18% |
| Widowed | 7% | 3% | 12% |
| Separated | 2% | 2% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau