City in Washington County, Oregon · 2.3 sq mi · 6,899 people per sq mi
16,137 people live in Cornelius. The typical household earns $96,273, and the median resident is 35.1 years old.
2026 projection
From 12,694 in 2020
Poverty rate 9.06%
Men 35.3 · Women 34.9
1880–2026
16,137
2026 projection
27.1% 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
16,137
2026 projection
27.1% 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 | 16,137 | +617 | 3.98% |
|---|---|---|---|
| 2025 | 15,520 | +228 | 1.49% |
| 2024 | 15,292 | +220 | 1.46% |
| 2023 | 15,072 | +638 | 4.42% |
| 2022 | 14,434 | +928 | 6.87% |
| 2021 | 13,506 | +812 | 6.40% |
| 2020 | 12,694 | +215 | 1.72% |
| 2019 | 12,479 | +78 | 0.63% |
| 2018 | 12,401 | +83 | 0.67% |
| 2017 | 12,318 | -56 | 0.45% |
Showing 10 of 29 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.
Cornelius is growing faster than Washington County, Oregon, 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 143 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 11 residents
45% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 45% | 46% | 44% |
| Never married | 39% | 43% | 36% |
| Divorced | 11% | 10% | 13% |
| Widowed | 4% | 2% | 5% |
| Separated | <1% | 0% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources