ZIP code 52231
Where is ZIP code 52231?
Harper, Iowa
Keokuk County · Standard ZIP code
ZIP code 52231 belongs to Harper, Iowa in Keokuk County. 52231 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area codes 319 and 641. About 539 people live in the 52231 area, where the median household income is $90,893. The closest ZIP codes are 52248 (Keota, 4.2 mi east), 52335 (South English, 5.7 mi north) and 52562 (Hayesville, 7.7 mi west).
| ZIP code | 52231 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Harper |
| State | Iowa (IA) |
| County | Keokuk County |
| Time zone | Central Time · now |
| Area codes | 319, 641 |
| Coordinates | 41.3728, -92.0388 map |
| 3-digit prefix | 522 |
Population and income in 52231
| Population | 539 · lower than 68% of Iowa ZIP codes |
|---|---|
| People per square mile | 16 · lower than 64% of Iowa ZIP codes |
| Median age | 39.3 years · lower than 70% of Iowa ZIP codes |
| Men / women | 59% / 41% |
| Median household income | $90,893 · higher than 80% of Iowa ZIP codes |
| Income per person | $36,397 |
| Below the poverty line | 2.2% |
| Bachelor’s degree or higher | 17% of adults 25+ |
| Median home value | $242,400 · higher than 84% of Iowa ZIP codes |
| Median rent | $1,125 a month |
| Housing units | 197 |
| Households | 197 (2.74 people on average) |
| Owners / renters | 96% / 3.6% |
| Land area | 34.52 sq mi (plus 0.04 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 52231. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 52231
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 52248 | Keota, IA | 4.2 mi E | Standard |
| 52335 | South English, IA | 5.7 mi N | Standard |
| 52562 | Hayesville, IA | 7.7 mi W | Standard |
| 52355 | Webster, IA | 8.4 mi NW | Standard |
| 52591 | Sigourney, IA | 9 mi W | Standard |
| 52316 | North English, IA | 10.8 mi N | Standard |
| 52359 | West Chester, IA | 12 mi E | Standard |
| 50136 | Keswick, IA | 12.1 mi NW | Standard |
| 52356 | Wellman, IA | 12.3 mi NE | Standard |
| 52585 | Richland, IA | 12.8 mi S | Standard |
| 52576 | Ollie, IA | 12.9 mi SW | Standard |
| 52325 | Parnell, IA | 13.7 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 52231 or measure the distance to another ZIP code.
How to address mail to 52231
123 MAIN ST
HARPER IA 52231
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (52231-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 52231?
- 52231 is a Harper, Iowa ZIP code.
- What county is 52231 in?
- ZIP code 52231 is in Keokuk County, Iowa.
- What time zone is ZIP code 52231 in?
- 52231 is in the Central Time zone (America/Chicago).
- What area code is 52231?
- Phone numbers in ZIP code 52231 use area codes 319 and 641.
- What is the population of ZIP code 52231?
- About 539 people live in ZIP code 52231, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 52231?
- The median household income in 52231 is $90,893 a year, higher than 80% of Iowa ZIP codes.
- What ZIP codes are near 52231?
- The nearest ZIP codes to 52231 are 52248 (Keota, 4.2 miles), 52335 (South English, 5.7 miles), 52562 (Hayesville, 7.7 miles) and 52355 (Webster, 8.4 miles).