ZIP code 51040
Where is ZIP code 51040?
Onawa, Iowa
Monona County · Standard ZIP code
ZIP code 51040 belongs to Onawa, Iowa in Monona County. 51040 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 402, 531 and 712. About 3,500 people live in the 51040 area, where the median household income is $71,179. The closest ZIP codes are 51523 (Blencoe, 7.9 mi south), 68020 (Decatur, 8.3 mi west) and 51063 (Whiting, 8.8 mi northwest).
| ZIP code | 51040 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Onawa |
| Also accepted | Turin |
| State | Iowa (IA) |
| County | Monona County |
| Time zone | Central Time · now |
| Area codes | 402, 531, 712 |
| Coordinates | 42.037, -96.1072 map |
| 3-digit prefix | 510 |
Population and income in 51040
| Population | 3,500 · higher than 82% of Iowa ZIP codes |
|---|---|
| People per square mile | 27 · higher than 58% of Iowa ZIP codes |
| Median age | 37.6 years · lower than 78% of Iowa ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $71,179 · lower than 58% of Iowa ZIP codes |
| Income per person | $33,598 |
| Below the poverty line | 14% |
| Bachelor’s degree or higher | 20% of adults 25+ |
| Median home value | $151,600 · lower than 57% of Iowa ZIP codes |
| Median rent | $947 a month |
| Housing units | 1,731 |
| Households | 1,555 (2.19 people on average) |
| Owners / renters | 75% / 25% |
| Land area | 129.51 sq mi (plus 1.61 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51040. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 51040
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 51523 | Blencoe, IA | 7.9 mi S | Standard |
| 68020 | Decatur, NE | 8.3 mi W | Standard |
| 51063 | Whiting, IA | 8.8 mi NW | Standard |
| 51010 | Castana, IA | 10.5 mi E | Standard |
| 51051 | Rodney, IA | 13 mi NE | Standard |
| 68039 | Macy, NE | 14.1 mi NW | Standard |
| 51055 | Sloan, IA | 15.6 mi NW | Standard |
| 51056 | Smithland, IA | 16.3 mi NE | Standard |
| 51545 | Little Sioux, IA | 16.3 mi S | Standard |
| 51558 | Moorhead, IA | 16.5 mi SE | Standard |
| 51572 | Soldier, IA | 16.9 mi E | Standard |
| 51026 | Hornick, IA | 17.5 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51040 or measure the distance to another ZIP code.
How to address mail to 51040
123 MAIN ST
ONAWA IA 51040
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts TURIN as the city name for 51040. Adding the 4-digit ZIP+4 code (51040-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 51040?
- 51040 is a Onawa, Iowa ZIP code. Turin is also accepted as the city name.
- What county is 51040 in?
- ZIP code 51040 is in Monona County, Iowa.
- What time zone is ZIP code 51040 in?
- 51040 is in the Central Time zone (America/Chicago).
- What area code is 51040?
- Phone numbers in ZIP code 51040 use area codes 402, 531 and 712.
- What is the population of ZIP code 51040?
- About 3,500 people live in ZIP code 51040, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 51040?
- The median household income in 51040 is $71,179 a year, lower than 58% of Iowa ZIP codes.
- What ZIP codes are near 51040?
- The nearest ZIP codes to 51040 are 51523 (Blencoe, 7.9 miles), 68020 (Decatur, 8.3 miles), 51063 (Whiting, 8.8 miles) and 51010 (Castana, 10.5 miles).