ZIP code 51109
Where is ZIP code 51109?
Sioux City, Iowa
Woodbury County · Standard ZIP code
ZIP code 51109 belongs to Sioux City, Iowa in Woodbury County. 51109 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, 605 and 712. About 3,606 people live in the 51109 area, where the median household income is $79,034. The closest ZIP codes are 57049 (North Sioux City, 1.5 mi west), 51103 (Sioux City, 2.7 mi east) and 51104 (Sioux City, 4.1 mi east).
| ZIP code | 51109 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Sioux City |
| State | Iowa (IA) |
| County | Woodbury County |
| Time zone | Central Time · now |
| Area codes | 402, 531, 605, 712 |
| Coordinates | 42.5173, -96.4803 map |
| 3-digit prefix | 511 |
Population and income in 51109
| Population | 3,606 · higher than 82% of Iowa ZIP codes |
|---|---|
| People per square mile | 205 · higher than 84% of Iowa ZIP codes |
| Median age | 39.4 years · lower than 70% of Iowa ZIP codes |
| Men / women | 51% / 49% |
| Median household income | $79,034 · higher than 62% of Iowa ZIP codes |
| Income per person | $37,934 |
| Below the poverty line | 16% |
| Bachelor’s degree or higher | 3.4% of adults 25+ |
| Median home value | $130,900 · lower than 68% of Iowa ZIP codes |
| Median rent | $627 a month |
| Housing units | 1,488 |
| Households | 1,447 (2.49 people on average) |
| Owners / renters | 87% / 13% |
| Land area | 17.61 sq mi (plus 0.84 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51109. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 51109
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 57049 | North Sioux City, SD | 1.5 mi W | Standard |
| 51103 | Sioux City, IA | 2.7 mi E | Standard |
| 51104 | Sioux City, IA | 4.1 mi E | Standard |
| 51101 | Sioux City, IA | 4.2 mi E | Standard |
| 68776 | South Sioux City, NE | 4.8 mi SE | Standard |
| 51105 | Sioux City, IA | 5.1 mi E | Standard |
| 51108 | Sioux City, IA | 6.4 mi E | Standard |
| 68743 | Jackson, NE | 6.5 mi SW | Standard |
| 51106 | Sioux City, IA | 7.4 mi SE | Standard |
| 57038 | Jefferson, SD | 7.7 mi NW | Standard |
| 51111 | Sioux City, IA | 9.3 mi SE | Standard |
| 68731 | Dakota City, NE | 9.5 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51109 or measure the distance to another ZIP code.
How to address mail to 51109
123 MAIN ST
SIOUX CITY IA 51109
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Blvd Station: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (51109-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Sioux City, IA
All Sioux City ZIP codes with population and income →
Questions
- What city is ZIP code 51109?
- 51109 is a Sioux City, Iowa ZIP code.
- What county is 51109 in?
- ZIP code 51109 is in Woodbury County, Iowa.
- What time zone is ZIP code 51109 in?
- 51109 is in the Central Time zone (America/Chicago).
- What area code is 51109?
- Phone numbers in ZIP code 51109 use area codes 402, 531, 605 and 712.
- What is the population of ZIP code 51109?
- About 3,606 people live in ZIP code 51109, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 51109?
- The median household income in 51109 is $79,034 a year, higher than 62% of Iowa ZIP codes.
- What ZIP codes are near 51109?
- The nearest ZIP codes to 51109 are 57049 (North Sioux City, 1.5 miles), 51103 (Sioux City, 2.7 miles), 51104 (Sioux City, 4.1 miles) and 51101 (Sioux City, 4.2 miles).