51105 ZIP Code, Sioux City, IA
51105 is a ZIP code in Sioux City, Iowa in Woodbury County. It covers 6.0 square miles of land. The closest ZIP codes are 51101, 51104 and 51106. 10,415 people live here in 3,596 households, more than in 9 of every 10 Iowa ZIP codes. At about 1,750 people per square mile it has suburban density, and owners and renters are mixed (48% own). Median household income is $51,786, below the Iowa median of $75,059; 43% of households have children under 18.
Quick facts
- Mailing city: Sioux City, IA
- County: Woodbury County
- Land area: 6.0 sq mi
- Population: 10,415
- Median household income: $51,786
Key figures
| Measure | Value |
|---|---|
| Residents | 10,415 |
| Households | 3,596 |
| Median household income | $51,786 |
| Income per person | $24,008 |
| Median age | 29.6 |
| Homeowners | 48.2% |
| Median home value | $96,200 |
| Median rent | $859 |
| Bachelor's degree or higher | 7.8% |
| Average commute (minutes) | 16.9 |
| Households with kids under 18 | 42.6% |
| Moved in the past year | 10.1% |
| Below the poverty line | 21.6% |
| Broadband internet | 84.4% |
| Speak a non-English language at home | 40.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.6% |
| $10–15K | 5.3% |
| $15–25K | 6.0% |
| $25–35K | 10.8% |
| $35–50K | 19.2% |
| $50–75K | 14.2% |
| $75–100K | 17.7% |
| $100–150K | 14.2% |
| $150–200K | 2.7% |
| $200K+ | 3.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 18.4% |
| 10–19 | 17.7% |
| 20–24 | 6.9% |
| 25–34 | 15.6% |
| 35–44 | 14.8% |
| 45–54 | 11.6% |
| 55–64 | 8.5% |
| 65–74 | 4.9% |
| 75+ | 1.4% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 21.2% |
| Owned outright | 21.9% |
| Rented | 45.7% |
| Vacant | 11.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 53.3% |
| Townhome | 3.3% |
| 2–4 units | 15.7% |
| 5–19 units | 7.1% |
| 20+ units | 10.1% |
| Mobile / other | 10.4% |
Businesses in 51105
218 business establishments with 3,286 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 44
- Health Care and Social Assistance: 26
- Construction: 25
- Wholesale Trade: 23
- Other Services (except Public Administration): 18
- Accommodation and Food Services: 17
- Administrative and Support and Waste Management and Remediation Services: 15
- Manufacturing: 11
EDDM carrier routes
See every USPS carrier route in 51105 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 51101 — Sioux City city, IA (1.7 mi)
- 51104 — Sioux City city, IA (2.6 mi)
- 51106 — Sioux City city, IA (4.1 mi)
- 51108 — Sioux City city, IA (4.1 mi)
- 51103 — Sioux City city, IA (4.3 mi)
- 68776 — South Sioux City city, NE (5.2 mi)
- 51111 — Sioux City city, IA (6.3 mi)
- 57049 — North Sioux City city, SD (7.4 mi)
Areas that include 51105
- Sioux City, IA ZIP codes — 8 ZIP codes
- Woodbury County ZIP codes — 26 ZIP codes
- Iowa ZIP code data
Where it ranks
- No. 2 of 16: highest share of households with children in Woodbury County
- No. 4 of 16: highest share of residents who moved in during the past year in Woodbury County
- No. 1 of 16: lowest median age in Woodbury County
- No. 1 of 7: highest share of households with children in Sioux City, IA
- No. 2 of 7: highest share of residents who moved in during the past year in Sioux City, IA
- No. 1 of 7: lowest median age in Sioux City, IA
Mail every home in 51105
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 51105, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 51105 in?
- 51105 is a Sioux City, IA mailing address. By land area, 100% lies inside Sioux City.
- What county is 51105 in?
- 51105 is in Woodbury County.
- What is the population of 51105?
- About 10,415 people (±963), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 10,565.
- What is the median household income in 51105?
- $51,786 (±$7,804), compared with $75,059 for Iowa as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 51105?
- EDDM2GO's stored route library does not include 51105 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 51105?
- The closest, measured center to center: 51101 (1.7 mi, Sioux City), 51104 (2.6 mi, Sioux City), 51106 (4.1 mi, Sioux City), 51108 (4.1 mi, Sioux City), 51103 (4.3 mi, Sioux City) and 68776 (5.2 mi, South Sioux City).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.