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. Dubuque County
9. Story 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. Waterloo
9. Ames
10. Council Bluffs

Largest 10 Zip Codes by Population

1. 50023
2. 50613
3. 52001
4. 52302
5. 52402
6. 52404
7. 52722
8. 51503
9. 52240
10. 50315

20 Richest Counties in Iowa

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

20 Richest Cities in Iowa

1. Oak Hills
2. Rodman
3. Shueyville
4. High Amana
5. University Heights
6. Kent Estates
7. Diamondhead Lake
8. Tingley
9. Cumming
10. Robins
11. Clive
12. Twin Lakes
13. Sun Valley Lake
14. Polk City
15. Colwell
16. Lake Panorama
17. McClelland
18. Van Meter
19. Ryan
20. Alleman