County in Washington · 174 sq mi · 107 people per sq mi
18,598 people live in San Juan County. The typical household earns $84,800, and the median resident is 57 years old.
2026 projection
From 17,825 in 2020
Poverty rate 11.34%
Men 56 · Women 58
1870–2026
18,598
2026 projection
4.3% since 2020 (increase)
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.
1870–2026
18,598
2026 projection
4.3% since 2020 (increase)
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 | 18,598 | +21 | 0.11% |
|---|---|---|---|
| 2025 | 18,577 | +21 | 0.11% |
| 2024 | 18,556 | -7 | 0.04% |
| 2023 | 18,563 | -105 | 0.56% |
| 2022 | 18,668 | +39 | 0.21% |
| 2021 | 18,629 | +804 | 4.51% |
| 2020 | 17,825 | +473 | 2.73% |
| 2019 | 17,352 | +361 | 2.12% |
| 2018 | 16,991 | +317 | 1.90% |
| 2017 | 16,674 | +418 | 2.57% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 185 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 9 residents
58% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 58% | 60% | 56% |
| Never married | 21% | 23% | 20% |
| Divorced | 14% | 12% | 15% |
| Widowed | 6% | 3% | 8% |
| Separated | 1% | 1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau