Residential delivery area · Iowa
ZIP Code 52228: Fairfax, IA
ZIP code 52228 uses the postal name Fairfax, Iowa and lies mostly in Linn County (76% of its land), reaching into Benton County and Johnson County (Census 2020 ZIP-county file). About 3,800 people live there (Census Bureau, ACS 2020-2024). Median household income is $118,125 (Census Bureau, ACS 2020-2024). By Census place, 8% of its land lies in Fairfax, and 4% in smaller places; 88% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Fairfax · its only residential ZIP
- County
- Linn County (76%); Benton County (13%); Johnson County (11%)
- Census places
- Fairfax
- Metro area
- Cedar Rapids, IA
- House districts
- IA-2 (89%), IA-1 (11%) 119th Congress, by share of land
- State
- Iowa
- Time zone
- Central
- Land area
- 37.2 sq mi · 102 people per sq mi
Where is ZIP code 52228?
52228 centers on 41.902°, -91.789° and covers 37.2 square miles of land plus 0.0 of water. It borders 6 ZIP codes: 52351, 52404, 52318, 52338, 52206, 52203.
The map draws ZIP code areas only. For the streets inside 52228, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 52228 compare with the rest of Linn County?
| Measure | 52228 | In Linn County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 3,802 | 13th of 29 | 166th of 970 |
| Median household income | $118k | 5th of 22 | 18th of 396 |
| Median home value | $309k | 6th of 23 | 43rd of 423 |
Its median household income is higher than in 90% of U.S. residential ZIP codes, and it is denser than 54% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 52228?
The 2020 Census counted 3,402 people in 52228; the ACS, which samples households over 2020-2024, estimates 3,802. Between the 2010 and 2020 censuses its population grew 22.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,802±670 (90% margin)
- 2020 Census count
- 3,402+22.7% since 2010 (2,772)
- Households
- 1,416
- Median age
- 40.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 52228?
Of the 3,802 people the ACS estimates in 52228, 26.4% are under 18 and 14.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.9%).
- Under 1826.4%
- 18 to 6459.5%
- 65 and older14.0%
- White, not Hispanic89.9%
- Hispanic or Latino4.1%
- Other or two or more2.8%
- Black, not Hispanic2.0%
- Asian, not Hispanic1.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 52228 earn?
Median household income is $118,125 (ACS 2020-2024), the 5th highest of the 22 ranked ZIP codes in Linn County. It is not measurably different from 2015-2019 ($116,203 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $118,125±$26,785
- Income per person
- $56,845
- Below the poverty line
- 4.8%
- Unemployed (of the labor force)
- 2.8%
- Adults 25+ with a bachelor's degree
- 41.0%
- Adjusted gross income per tax return, 2022
- $102,5601,720 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 52228?
FHFA's house price index for 52228, built from repeat sales and appraisals of the same homes, rose 47% from 2015 to 2025 and rose 33% from 2020 to 2025, and moved +4.7% in 2025.
- Median home value (owners' estimate)
- $308,900
- Median gross rent
- $1,167
- Homes owned by their occupants
- 91.0%
- Housing units
- 1,483
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 52228?
63 business establishments had a location in this ZIP code in 2023, 11 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction19
- Other services (except public administration)11
- Administrative and support and waste management and remediation services6
- Retail trade4
- Finance and insurance4
- Professional, scientific, and technical services4
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 52228?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 52351 | Walford | 1,329 | $129k | 3.1 mi |
| 52404 | Cedar Rapids | 42,958 | $62k | 5.3 mi |
| 52318 | Norway | 1,099 | $86k | 5.6 mi |
| 52338 | Swisher | 3,934 | $120k | 7.2 mi |
| 52206 | Atkins | 2,564 | $116k | 8.0 mi |
| 52203 | Amana | 2,231 | $102k | 8.1 mi |
| 52405 | Cedar Rapids | 26,526 | $70k | 6.0 mi (near) |
| 52401 | Cedar Rapids | 2,181 | $35k | 8.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.