Immigration Trends

Denver County (CO)

Top countries of origin for this county's foreign-born population, decade by decade, 1900-1960 -- the same IPUMS NHGIS census tables behind Population Trends, read for country-of-birth instead of race. No comparable county-level series exists past 1960 in this data (same real gap Population Trends names for its own 1960-2023 span).

1960

92,642 foreign-born residents on file this year

Germany

13,373

U.S.S.R.

10,211

United Kingdom

9,430

Italy

7,508

Sweden

6,047

1950

25,557 foreign-born residents on file this year

The U.S.S.R.

3,245

Other

3,193

Germany

2,550

Italy

1,993

England and Wales

1,811

1940

25,523 foreign-born residents on file this year

Russia (U.S.S.R.)

3,657

Germany

2,829

Sweden

2,427

Italy

2,339

England

2,001

1930

31,235 foreign-born residents on file this year

Germany

3,969

Russia

3,885

Sweden

3,500

Italy

2,874

England

2,800

1920

37,620 foreign-born residents on file this year

Russia

5,333

Germany

4,664

Sweden

3,953

England

3,556

Ireland

3,221

1910

42,415 foreign-born residents on file this year

Germany

6,636

Russia

5,505

Sweden

4,537

England

4,153

Ireland

3,965