10. Oregon
> Population growth, 1880 to 2020: 4.1 million (+24.2 fold increase)
> Total population,1880: 174,768 — 15th smallest
> Total population, 2020: 4,237,256 — 24th smallest
9. Montana
> Population growth, 1880 to 2020: 1.0 million (+27.7 fold increase)
> Total population,1880: 39,159 — 7th smallest
> Total population, 2020: 1,084,225 — 7th smallest
8. Wyoming
> Population growth, 1880 to 2020: 556,062 (+27.7 fold increase)
> Total population,1880: 20,789 — 4th smallest
> Total population, 2020: 576,851 — the smallest
7. Colorado
> Population growth, 1880 to 2020: 5.6 million (+29.7 fold increase)
> Total population,1880: 194,327 — 16th smallest
> Total population, 2020: 5,773,714 — 21st largest
6. California
> Population growth, 1880 to 2020: 38.7 million (+45.7 fold increase)
> Total population,1880: 864,694 — 24th largest
> Total population, 2020: 39,538,223 — the largest
