ZIP code 51640
Where is ZIP code 51640?
Hamburg, Iowa
Fremont County · Standard ZIP code
ZIP code 51640 belongs to Hamburg, Iowa in Fremont County. 51640 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, 660 and 712. About 1,381 people live in the 51640 area, where the median household income is $65,385. The closest ZIP codes are 51650 (Riverton, 4.2 mi northeast), 51652 (Sidney, 9.4 mi north) and 64496 (Watson, 9.5 mi south).
| ZIP code | 51640 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Hamburg |
| State | Iowa (IA) |
| County | Fremont County |
| Time zone | Central Time · now |
| Area codes | 402, 531, 660, 712 |
| Coordinates | 40.6149, -95.6258 map |
| 3-digit prefix | 516 |
Population and income in 51640
| Population | 1,381 · higher than 62% of Iowa ZIP codes |
|---|---|
| People per square mile | 12 · lower than 77% of Iowa ZIP codes |
| Median age | 43.1 years · higher than 53% of Iowa ZIP codes |
| Men / women | 55% / 45% |
| Median household income | $65,385 · lower than 69% of Iowa ZIP codes |
| Income per person | $36,780 |
| Below the poverty line | 6.7% |
| Bachelor’s degree or higher | 18% of adults 25+ |
| Median home value | $122,900 · lower than 71% of Iowa ZIP codes |
| Median rent | $729 a month |
| Housing units | 690 |
| Households | 588 (2.35 people on average) |
| Owners / renters | 79% / 21% |
| Land area | 115.41 sq mi (plus 1.56 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51640. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 51640
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 51650 | Riverton, IA | 4.2 mi NE | Standard |
| 51652 | Sidney, IA | 9.4 mi N | Standard |
| 64496 | Watson, MO | 9.5 mi S | Standard |
| 51639 | Farragut, IA | 10.7 mi NE | Standard |
| 68421 | Peru, NE | 11 mi SW | Standard |
| 51648 | Percival, IA | 12.9 mi NW | Standard |
| 68410 | Nebraska City, NE | 13 mi W | Standard |
| 64482 | Rock Port, MO | 13.7 mi S | Standard |
| 68379 | Julian, NE | 14.3 mi SW | Standard |
| 68321 | Brownville, NE | 15.3 mi S | Standard |
| 51647 | Northboro, IA | 16.6 mi E | Standard |
| 51601 | Shenandoah, IA | 16.9 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51640 or measure the distance to another ZIP code.
How to address mail to 51640
123 MAIN ST
HAMBURG IA 51640
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (51640-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 51640?
- 51640 is a Hamburg, Iowa ZIP code.
- What county is 51640 in?
- ZIP code 51640 is in Fremont County, Iowa.
- What time zone is ZIP code 51640 in?
- 51640 is in the Central Time zone (America/Chicago).
- What area code is 51640?
- Phone numbers in ZIP code 51640 use area codes 402, 531, 660 and 712.
- What is the population of ZIP code 51640?
- About 1,381 people live in ZIP code 51640, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 51640?
- The median household income in 51640 is $65,385 a year, lower than 69% of Iowa ZIP codes.
- What ZIP codes are near 51640?
- The nearest ZIP codes to 51640 are 51650 (Riverton, 4.2 miles), 51652 (Sidney, 9.4 miles), 64496 (Watson, 9.5 miles) and 51639 (Farragut, 10.7 miles).