Iowa Demographics Site Map

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Browse Iowa Zip Codes

• Zip Codes by Population

Largest 10 Counties by Population

1. Polk County
2. Linn County
3. Scott County
4. Johnson County
5. Black Hawk County
6. Dallas County
7. Woodbury County
8. Story County
9. Dubuque County
10. Pottawattamie County

Largest 10 Cities by Population

1. Des Moines
2. Cedar Rapids
3. Davenport
4. Sioux City
5. Iowa City
6. Ankeny
7. West Des Moines
8. Ames
9. Waterloo
10. Council Bluffs

Largest 10 Zip Codes by Population

1. 50023
2. 50613
3. 52001
4. 52404
5. 52402
6. 52302
7. 52722
8. 51503
9. 50266
10. 50317

20 Richest Counties in Iowa

1. Dallas County
2. Warren County
3. Mills County
4. Polk County
5. Johnson County
6. Bremer County
7. Madison County
8. Sioux County
9. Linn County
10. Scott County
11. Adams County
12. Dickinson County
13. Benton County
14. Plymouth County
15. Grundy County
16. Guthrie County
17. Marion County
18. Winneshiek County
19. Dubuque County
20. Boone County

20 Richest Cities in Iowa

1. Rodman
2. Oak Hills
3. Tingley
4. Shueyville
5. Berkley
6. Cumming
7. Robins
8. Stone City
9. Lake Panorama
10. Diamondhead Lake
11. Clive
12. Van Meter
13. Kent Estates
14. Colwell
15. Polk City
16. Persia
17. Sun Valley Lake
18. Tiffin
19. Johnston
20. Asbury