Zip Code 52228 — Fairfax, IA
52228 is a ZIP Code associated with Fairfax, IA, located within Linn. 52228 ranks #10 out of 22 ZIP codes in Linn County by population (and #166 out of 970 in IA). The area supports an estimated population of 3,802 residents across Data Pending housing units, with a population density of 39.4 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (41.902820, -91.791320)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 52228 |
| Primary City | Fairfax |
| State / Province | IA |
| County | Linn |
| Total Population | 3,802 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 39.4 people/sq mi |
| Timezone | America/Chicago |
How 52228 Compares
| Metric | ZIP 52228 | Linn County | IA State Average |
|---|
| Population | 3,802 | 228,503 (Total) | 3,210,984 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 39.4 /sq mi | -- | -- |
| County Pop Rank | #10 of 22 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →