ZIP code 51240
Where is ZIP code 51240?
Inwood, Iowa
Lyon County · Standard ZIP code
ZIP code 51240 belongs to Inwood, Iowa in Lyon County. 51240 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 605 and 712. About 1,914 people live in the 51240 area, where the median household income is $83,929. The closest ZIP codes are 51230 (Alvord, 7.4 mi east), 57013 (Canton, 7.9 mi west) and 57027 (Fairview, 8.4 mi southwest).
| ZIP code | 51240 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Inwood |
| State | Iowa (IA) |
| County | Lyon County |
| Time zone | Central Time · now |
| Area codes | 605, 712 |
| Coordinates | 43.3047, -96.4363 map |
| 3-digit prefix | 512 |
Population and income in 51240
| Population | 1,914 · higher than 70% of Iowa ZIP codes |
|---|---|
| People per square mile | 19 · lower than 56% of Iowa ZIP codes |
| Median age | 34.4 years · lower than 89% of Iowa ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $83,929 · higher than 70% of Iowa ZIP codes |
| Income per person | $41,804 |
| Below the poverty line | 3.0% |
| Bachelor’s degree or higher | 17% of adults 25+ |
| Median home value | $232,600 · higher than 82% of Iowa ZIP codes |
| Median rent | $993 a month |
| Housing units | 673 |
| Households | 632 (2.97 people on average) |
| Owners / renters | 87% / 13% |
| Land area | 100.43 sq mi (plus 0.11 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51240. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 51240
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 51230 | Alvord, IA | 7.4 mi E | Standard |
| 57013 | Canton, SD | 7.9 mi W | Standard |
| 57027 | Fairview, SD | 8.4 mi SW | Standard |
| 51241 | Larchwood, IA | 9.3 mi N | Standard |
| 51247 | Rock Valley, IA | 9.5 mi SE | Standard |
| 51242 | Lester, IA | 10.9 mi NE | PO Box only |
| 51235 | Doon, IA | 11.8 mi E | Standard |
| 57034 | Hudson, SD | 13.1 mi S | Standard |
| 51246 | Rock Rapids, IA | 15.5 mi NE | Standard |
| 57032 | Harrisburg, SD | 15.9 mi NW | Standard |
| 56138 | Hills, MN | 16.2 mi N | Standard |
| 57077 | Worthing, SD | 16.5 mi W | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51240 or measure the distance to another ZIP code.
How to address mail to 51240
123 MAIN ST
INWOOD IA 51240
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (51240-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 51240?
- 51240 is a Inwood, Iowa ZIP code.
- What county is 51240 in?
- ZIP code 51240 is in Lyon County, Iowa.
- What time zone is ZIP code 51240 in?
- 51240 is in the Central Time zone (America/Chicago).
- What area code is 51240?
- Phone numbers in ZIP code 51240 use area codes 605 and 712.
- What is the population of ZIP code 51240?
- About 1,914 people live in ZIP code 51240, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 51240?
- The median household income in 51240 is $83,929 a year, higher than 70% of Iowa ZIP codes.
- What ZIP codes are near 51240?
- The nearest ZIP codes to 51240 are 51230 (Alvord, 7.4 miles), 57013 (Canton, 7.9 miles), 57027 (Fairview, 8.4 miles) and 51241 (Larchwood, 9.3 miles).