County ProfileIA
Linn County
Population: 230,299 · 31 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
230,299
People
Median age
39
Housing
Total households
95,600
Income
Median household income
$77,649
Housing
Total housing units
103,104
Employment
Employment rate
65.4%
Education
Bachelor’s degree or higher
34.7%
Healthcare
Insured population
95.9%
County details
Local time 00:52:14(CT)| Name | Linn |
|---|---|
| Total ZIP codes | 31total |
| ZIP codes (by type) | 22 Standard6 PO Box3 Unique |
| Area code | 319, 563 |
| Timezone | Central Time (CT) |
| Coordinates | 42.0779506, -91.5976735 |
| Land area | 717 sq miles(1,857.1 km²) |
Map of Linn county, Iowa with ZIP codes
Cities and Communities in Linn County
Compare the largest cities in Linn County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Cedar Rapids | 137,710 | $70,424 | 14ZIPs |
| Marion | 41,535 | $86,743 | 1ZIPs |
| Hiawatha | 7,183 | $66,270 | 1ZIPs |
| Mount Vernon | 4,527 | $112,656 | 1ZIPs |
| Robins | 3,353 | $122,262 | 1ZIPs |
| Fairfax | 2,828 | $114,375 | 1ZIPs |
| Center Point | 2,579 | $95,192 | 1ZIPs |
| Ely | 2,328 | $105,882 | 1ZIPs |
| Lisbon | 2,233 | $93,906 | 1ZIPs |
| Palo | 1,407 | $106,375 | 1ZIPs |
| Central City | 1,264 | $85,400 | 1ZIPs |
| Springville | 1,154 | $92,656 | 1ZIPs |
| Toddville | 1,045 | — | 1ZIPs |
| Coggon | 701 | $76,250 | 1ZIPs |
| Walker | 688 | $82,656 | 1ZIPs |
| Alburnett | 675 | $105,357 | 1ZIPs |
| Prairieburg | 160 | $45,000 | 1ZIPs |
| Troy Mills | 22 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Linn County
Review the most populated postal areas across Linn County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 52404 | Cedar Rapids | $61,870 | 43,385 |
| 52302 | Marion | $87,983 | 43,130 |
| 52402 | Cedar Rapids | $73,439 | 42,072 |
| 52405 | Cedar Rapids | $70,123 | 26,382 |
| 52403 | Cedar Rapids | $74,703 | 23,012 |
| 52411 | Cedar Rapids | $170,491 | 7,954 |
| 52233 | Hiawatha | $65,575 | 7,091 |
| 52314 | Mount Vernon | $109,244 | 5,937 |
| 52213 | Center Point | $98,854 | 4,408 |
| 52228 | Fairfax | $118,125 | 3,402 |
| 52253 | Lisbon | $104,821 | 3,356 |
| 52227 | Ely | $120,230 | 3,089 |
| 52214 | Central City | $86,786 | 3,001 |
| 52328 | Robins | $125,347 | 2,889 |
| 52324 | Palo | $115,917 | 2,476 |
| 52401 | Cedar Rapids | $35,060 | 2,320 |
| 52336 | Springville | $91,458 | 2,310 |
| 52352 | Walker | $92,321 | 1,815 |
| 52218 | Coggon | $82,344 | 1,726 |
| 52202 | Alburnett | $105,362 | 1,112 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS