Fairfield, IA ZIP Codes
2 ZIP codes serve Fairfield, Iowa: 52556 and 52557. Together they are home to 12,133 residents in 5,377 households.
Fairfield city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 9,456 |
| Households | 4,115 |
| Median household income | $51,311 |
| Median home value | $156,000 |
| Median age | 40 |
| Median rent | $870 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 12,133 |
| Households (sum of ZIP codes) | 5,377 |
| Median household income, range across ZIP codes | $59,243 (52556) to $59,243 (52556) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $59,243 |
| Homeowners | 63.6% |
| Households with kids under 18 | 18.3% |
| Moved in the past year | 19.7% |
| Carrier routes in EDDM2GO's route library | 14 routes, 5,724 homes (1 of 2 ZIP codes) |
Every ZIP code in Fairfield
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52556 | Fairfield | 11,448 | 5,377 | $59,243 | $166,800 | 63.6% | 18.3% | 17.3% | 14 | 6,263 | 4% of its land; mailing city |
| 52557 | Fairfield | 685 | 0 | — | — | — | — | 60.0% | — | — | 100% of its land; mailing city |
A ZIP code is listed for Fairfield when at least 10% of its land lies inside Fairfield city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Fairfield. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Fairfield.
Counties
- Jefferson County — 10 ZIP codes
Price a mailing to Fairfield ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Fairfield, IA?
- 52556 and 52557. A ZIP code is listed for Fairfield when at least 10% of its land lies inside Fairfield city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Fairfield.
- What is the population of Fairfield, IA?
- The Census Bureau counts 9,456 residents inside Fairfield city limits (ACS 2020–2024). The 2 ZIP codes that serve Fairfield hold 12,133 residents in all.
- What is the median household income in Fairfield, IA?
- $51,311 inside Fairfield city limits, per the Census Bureau. Across its ZIP codes the medians run from $59,243 to $59,243.
- How many carrier routes and mailboxes are in Fairfield, IA?
- For the 1 of 2 ZIP codes in EDDM2GO's stored route library: 14 carrier routes reaching 5,724 residential and 540 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.