County in Idaho · 479 sq mi · 8 people per sq mi
3,695 people live in Lewis County. The typical household earns $51,615, and the median resident is 49 years old.
2026 projection
From 3,534 in 2020
Poverty rate 15.31%
Men 50 · Women 48.7
1920–2026
3,695
2026 projection
4.6% 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.
1920–2026
3,695
2026 projection
4.6% 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 | 3,695 | -9 | 0.24% |
|---|---|---|---|
| 2025 | 3,704 | -9 | 0.24% |
| 2024 | 3,713 | -30 | 0.80% |
| 2023 | 3,743 | +2 | 0.05% |
| 2022 | 3,741 | +37 | 1.00% |
| 2021 | 3,704 | +170 | 4.81% |
| 2020 | 3,534 | -311 | 8.09% |
| 2019 | 3,845 | +10 | 0.26% |
| 2018 | 3,835 | -48 | 1.24% |
| 2017 | 3,883 | +33 | 0.86% |
Showing 10 of 25 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 37 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
57% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 57% | 59% | 54% |
| Never married | 21% | 22% | 19% |
| Divorced | 12% | 12% | 13% |
| Widowed | 9% | 4% | 13% |
| Separated | 2% | 2% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau