ZIP code 52631
Where is ZIP code 52631?
Houghton, Iowa
Lee County · PO Box only ZIP code
ZIP code 52631 belongs to Houghton, Iowa in Lee County. 52631 is a PO Box only ZIP code: it is used for post office boxes at the Houghton post office, not for street addresses. It is in the Central Time zone and uses area code 319. About 65 people live in the 52631 area, where the median household income is $107,083. The closest ZIP codes are 52648 (Pilot Grove, 4.1 mi east), 52657 (Saint Paul, 5.1 mi east) and 52649 (Salem, 6.1 mi north).
| ZIP code | 52631 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Houghton |
| State | Iowa (IA) |
| County | Lee County |
| Time zone | Central Time · now |
| Area code | 319 |
| Coordinates | 40.77, -91.6138 map |
| 3-digit prefix | 526 |
Population and income in 52631
| Population | 65 · lower than 96% of Iowa ZIP codes |
|---|---|
| People per square mile | 322 · higher than 88% of Iowa ZIP codes |
| Median age | 42.8 years · higher than 51% of Iowa ZIP codes |
| Men / women | 54% / 46% |
| Median household income | $107,083 · higher than 92% of Iowa ZIP codes |
| Income per person | $57,337 |
| Below the poverty line | 0.0% |
| Bachelor’s degree or higher | 42% of adults 25+ |
| Median home value | $255,600 · higher than 86% of Iowa ZIP codes |
| Housing units | 26 |
| Households | 26 (2.5 people on average) |
| Owners / renters | 100% / 0.0% |
| Land area | 0.2 sq mi |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 52631. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 52631
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 52648 | Pilot Grove, IA | 4.1 mi E | Standard |
| 52657 | Saint Paul, IA | 5.1 mi E | Standard |
| 52649 | Salem, IA | 6.1 mi N | Standard |
| 52630 | Hillsboro, IA | 6.9 mi NW | Standard |
| 52625 | Donnellson, IA | 7.8 mi S | Standard |
| 52656 | West Point, IA | 9.9 mi SE | Standard |
| 52620 | Bonaparte, IA | 10 mi W | Standard |
| 52626 | Farmington, IA | 11.3 mi SW | Standard |
| 52651 | Stockport, IA | 12.1 mi NW | Standard |
| 52641 | Mount Pleasant, IA | 13.7 mi N | Standard |
| 52624 | Denmark, IA | 14.6 mi E | PO Box only |
| 52642 | Rome, IA | 14.9 mi N | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 52631 or measure the distance to another ZIP code.
How to address mail to 52631
PO BOX 123
HOUGHTON IA 52631
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (52631-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 52631?
- 52631 is a Houghton, Iowa ZIP code.
- What county is 52631 in?
- ZIP code 52631 is in Lee County, Iowa.
- What time zone is ZIP code 52631 in?
- 52631 is in the Central Time zone (America/Chicago).
- What area code is 52631?
- Phone numbers in ZIP code 52631 use area code 319.
- What is the population of ZIP code 52631?
- About 65 people live in ZIP code 52631, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 52631?
- The median household income in 52631 is $107,083 a year, higher than 92% of Iowa ZIP codes.
- Can I use 52631 for a street address?
- No. 52631 is only for PO Boxes. Street addresses in Houghton use another ZIP code.
- What ZIP codes are near 52631?
- The nearest ZIP codes to 52631 are 52648 (Pilot Grove, 4.1 miles), 52657 (Saint Paul, 5.1 miles), 52649 (Salem, 6.1 miles) and 52630 (Hillsboro, 6.9 miles).