Sioux City, IA ZIP Codes
8 ZIP codes serve Sioux City, Iowa: 51106, 51104, 51103, 51105, 51108, 51109, 51101 and 51111. Together they are home to 89,735 residents in 34,250 households. Median household income ranges from $15,300 in 51101 to $81,205 in 51108.
Sioux City city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 86,101 |
| Households | 32,926 |
| Median household income | $68,906 |
| Median home value | $173,600 |
| Median age | 34.9 |
| Median rent | $976 |
All 8 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 89,735 |
| Households (sum of ZIP codes) | 34,250 |
| Median household income, range across ZIP codes | $15,300 (51101) to $81,205 (51108) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $70,084 |
| Homeowners | 65.8% |
| Households with kids under 18 | 32.6% |
| Moved in the past year | 8.7% |
| Carrier routes in EDDM2GO's route library | 42 routes, 23,662 homes (3 of 8 ZIP codes) |
Top facts
- Highest median household income in Sioux City: 51108 ($81,205)
- Most residents: 51106 (28,592 people)
- Highest homeownership: 51109 (87.0% own their home)
- Most households with kids: 51105 (42.6% of households)
- Most new movers: 51101 (34.2% moved in last year)
- Youngest median age: 51105 (29.6 years)
- Highest median home value: 51104 ($211,100)
Every ZIP code in Sioux City
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 51106 | Sioux City | 28,592 | 11,249 | $78,434 | $200,200 | 70.2% | 29.5% | 7.8% | 21 | 13,049 | 43% of its land; mailing city |
| 51104 | Sioux City | 23,197 | 8,729 | $75,362 | $211,100 | 64.5% | 33.5% | 8.7% | 15 | 9,278 | 100% of its land; mailing city |
| 51103 | Sioux City | 16,895 | 6,402 | $58,197 | $142,900 | 65.6% | 31.5% | 8.4% | — | — | 100% of its land; mailing city |
| 51105 | Sioux City | 10,415 | 3,596 | $51,786 | $96,200 | 48.2% | 42.6% | 10.1% | — | — | 100% of its land; mailing city |
| 51108 | Sioux City | 5,960 | 2,160 | $81,205 | $169,700 | 83.3% | 39.3% | 6.0% | 6 | 2,519 | 18% of its land; mailing city |
| 51109 | Sioux City | 3,606 | 1,447 | $79,034 | $130,900 | 87.0% | 29.0% | 10.0% | — | — | 10% of its land; mailing city |
| 51101 | Sioux City | 1,031 | 640 | $15,300 | — | 3.4% | 17.2% | 34.2% | — | — | 100% of its land; mailing city |
| 51111 | Sioux City | 39 | 27 | — | — | 0.0% | 0.0% | 69.2% | — | — | 100% of its land; mailing city |
A ZIP code is listed for Sioux City when at least 10% of its land lies inside Sioux City city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Sioux City. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Sioux City.
Counties
- Woodbury County — 26 ZIP codes
- Plymouth County — 13 ZIP codes
Rankings
- Richest ZIP codes in Sioux City — 7 ZIP codes ranked
- ZIP codes with the highest home values in Sioux City — 6 ZIP codes ranked
- ZIP codes with the highest homeownership in Sioux City — 7 ZIP codes ranked
- ZIP codes with the most families with kids in Sioux City — 7 ZIP codes ranked
- ZIP codes with the most new movers in Sioux City — 7 ZIP codes ranked
- Youngest ZIP codes in Sioux City — 7 ZIP codes ranked
- Oldest ZIP codes in Sioux City — 7 ZIP codes ranked
- Fastest-growing ZIP codes in Sioux City — 6 ZIP codes ranked
Price a mailing to Sioux City ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Sioux City, IA?
- 51106, 51104, 51103, 51105, 51108, 51109, 51101 and 51111. A ZIP code is listed for Sioux City when at least 10% of its land lies inside Sioux City city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Sioux City.
- What is the population of Sioux City, IA?
- The Census Bureau counts 86,101 residents inside Sioux City city limits (ACS 2020–2024). The 8 ZIP codes that serve Sioux City hold 89,735 residents in all.
- What is the median household income in Sioux City, IA?
- $68,906 inside Sioux City city limits, per the Census Bureau. Across its ZIP codes the medians run from $15,300 to $81,205.
- Which Sioux City ZIP code has the highest median household income?
- 51108, at $81,205, among ZIP codes with at least 1,000 residents. See the full ranking of Sioux City ZIP codes by income.
- How many carrier routes and mailboxes are in Sioux City, IA?
- For the 3 of 8 ZIP codes in EDDM2GO's stored route library: 42 carrier routes reaching 23,662 residential and 1,182 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.