Iowa ZIP Codes

ZIP records
970
Cities represented
926
Counties represented
99
Sum of listed ZIP population estimates
3,210,984

Population sum includes positive estimates in these ZIP records; it is not an official state population.

Top ZIP Codes by Population

Rank	ZIP Code	City	County	Population estimate
1	50023	Ankeny	Polk	46,306
2	50613	Cedar Falls	Black Hawk	43,867
3	52001	Dubuque	Dubuque	43,101
4	52404	Cedar Rapids	Linn	42,958
5	52402	Cedar Rapids	Linn	42,938
6	52302	Marion	Linn	42,706
7	52722	Bettendorf	Scott	41,264
8	51503	Council Bluffs	Pottawattamie	37,972
9	50266	West Des Moines	Dallas	37,523
10	50317	Des Moines	Polk	36,548
11	52240	Iowa City	Johnson	35,074
12	50315	Des Moines	Polk	34,816
13	51501	Council Bluffs	Pottawattamie	34,618
14	50010	Ames	Story	33,799
15	50265	West Des Moines	Polk	33,488
16	50014	Ames	Story	32,958
17	50322	Urbandale	Polk	31,931
18	50158	Marshalltown	Marshall	31,396
19	50310	Des Moines	Polk	31,177
20	52501	Ottumwa	Wapello	30,371

Counties

Cities

ZIP Prefix Directory

ZIP Range Directory

ZIP range 50000-59999

Download Iowa ZIP records (CSV)

Methodology: ZIP records and place names are grouped using the source file's state, city, county, and ZIP fields. Population sums add positive ZIP-level estimates; they are not official state totals. Prefix and range links lead to directories of records sharing those ZIP patterns.