ZIP code 51105
Where is ZIP code 51105?
Sioux City, Iowa
Woodbury County · Standard ZIP code
ZIP code 51105 belongs to Sioux City, Iowa in Woodbury County. 51105 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 code 712. About 10,415 people live in the 51105 area, where the median household income is $51,786. The closest ZIP codes are 51101 (Sioux City, 1.1 mi west), 51104 (Sioux City, 1.8 mi northwest) and 51103 (Sioux City, 2.4 mi west).
| ZIP code | 51105 |
|---|---|
| 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 code | 712 |
| Coordinates | 42.5032, -96.3829 map |
| 3-digit prefix | 511 |
Population and income in 51105
| Population | 10,415 · higher than 92% of Iowa ZIP codes |
|---|---|
| People per square mile | 1,750 · higher than 97% of Iowa ZIP codes |
| Median age | 29.6 years · lower than 96% of Iowa ZIP codes |
| Men / women | 54% / 46% |
| Median household income | $51,786 · lower than 93% of Iowa ZIP codes |
| Income per person | $24,008 |
| Below the poverty line | 22% |
| Bachelor’s degree or higher | 7.8% of adults 25+ |
| Median home value | $96,200 · lower than 88% of Iowa ZIP codes |
| Median rent | $859 a month |
| Housing units | 4,053 |
| Households | 3,596 (2.89 people on average) |
| Owners / renters | 48% / 52% |
| Land area | 5.95 sq mi (plus 0.03 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51105. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 51105
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 51101 | Sioux City, IA | 1.1 mi W | Standard |
| 51104 | Sioux City, IA | 1.8 mi NW | Standard |
| 51103 | Sioux City, IA | 2.4 mi W | Standard |
| 51106 | Sioux City, IA | 2.9 mi SE | Standard |
| 68776 | South Sioux City, NE | 3.2 mi SW | Standard |
| 51108 | Sioux City, IA | 3.2 mi N | Standard |
| 51109 | Sioux City, IA | 5.1 mi W | Standard |
| 57049 | North Sioux City, SD | 6.5 mi W | Standard |
| 51111 | Sioux City, IA | 6.5 mi S | Standard |
| 51054 | Sergeant Bluff, IA | 7.2 mi S | Standard |
| 51024 | Hinton, IA | 8 mi NE | Standard |
| 51030 | Lawton, IA | 8.4 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51105 or measure the distance to another ZIP code.
How to address mail to 51105
123 MAIN ST
SIOUX CITY IA 51105
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (51105-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 51105?
- 51105 is a Sioux City, Iowa ZIP code.
- What county is 51105 in?
- ZIP code 51105 is in Woodbury County, Iowa.
- What time zone is ZIP code 51105 in?
- 51105 is in the Central Time zone (America/Chicago).
- What area code is 51105?
- Phone numbers in ZIP code 51105 use area code 712.
- What is the population of ZIP code 51105?
- About 10,415 people live in ZIP code 51105, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 51105?
- The median household income in 51105 is $51,786 a year, lower than 93% of Iowa ZIP codes.
- What ZIP codes are near 51105?
- The nearest ZIP codes to 51105 are 51101 (Sioux City, 1.1 miles), 51104 (Sioux City, 1.8 miles), 51103 (Sioux City, 2.4 miles) and 51106 (Sioux City, 2.9 miles).