PlainZIP

Sioux City, IA

Census ZIP code profile for Sioux City, IA - 8 ZIPs, total population 85,884. Median income, home value, education, commute, and demographics from the U.S. Census Bureau American Community Survey 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet SIOUX-CITY-IA · Sioux City, IA 8 ZIPs · 85,884 pop · #16495/25278 · Woodbury County

INC-MID · RANK-LOWER · BELOW-PEER · BOOK-MID · OWN-LOW · POP-SMALL · SPREAD-SPLIT · HOME-LOW

  • INC-MID $62,760
  • RANK-LOWER #16495/25278
  • BELOW-PEER under Sloan
  • BOOK-MID 8 ZIPs
  • OWN-LOW 53% owners
  • POP-SMALL 85,884
  • SPREAD-SPLIT 51101→51108
  • HOME-LOW $158,500

Nearest income peer: Sloan, IA (+ $9,383 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Sioux City

Lowest/highest poles plus county-sharing cities nearest Sioux City on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Sioux City, IA sits among US cities with a below-median household income, on a small-city population base, across a compact ZIP cluster.

35th pct
household income vs 25,278 US cities
85,884
city population (Census)
8
USPS ZIP codes covered
$62,760
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

A below-median income city on a compact ZIP cluster (8 codes). Income averages $62,760, rent $938 , commute about 16 minutes. Sibling ZIPs here are close enough that a two-ZIP compare often answers which side of town.

Sioux City sits in the lower half of Woodbury County on income: Sergeant Bluff, Moville and Lawton report more, Correctionville and Anthon report less. Sergeant Bluff marks the far end of that range at $119,716, 91% above Sioux City.

Within-city ZIP comparison

Where the ZIP codes inside Sioux City differ

Sioux City's city average masks two linked splits. Median household income runs from $15,300 in ZIP 51101 to $81,205 in ZIP 51108, while home values span $96,200 in 51105 to $211,100 in 51104. Compare the endpoint ZIPs before treating the city-level number as a neighborhood-level answer.

Income high-to-low ratio
5.3×

51101 to 51108

Home-value high-to-low ratio
2.2×

51105 to 51104

Poverty-rate spread
41.6 points

51108 to 51101

Derived from the published ACS 2023 ZIP-level records shown on this site. A high-to-low ratio compares the highest and lowest available ZIP values; it is not a score or forecast.

Population concentration

Sioux City population is a blend, not a flagship ZIP

Across 8 delivery areas, the densest code 51106 still covers only about 31% of Sioux City's 85,884 residents. The city average is a blend, pick two ZIPs with different incomes before using one number.

Census ZBP business roll-up

Dense employer mosaic across Sioux City

Citywide ZBP: 2,229 establishments, 41,906 employees , annual payroll $2,023,447k (~26 establishments per 1,000 residents) across 8 of 8 ZIPs. Peak business ZIP 51106 (753 units) ; leading NAICS Retail trade (338) · also Health care and social assistance · Other services (except public administration) .

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ZIP Codes in Sioux City, IA

These ZIP codes sit in Woodbury County, which covers 22 ZIP codes in all; 8 of them fall in Sioux City. See the Woodbury County roll-up →

Sioux City sits in the lower half of Woodbury County on income: Sergeant Bluff, Moville and Lawton report more, Correctionville and Anthon report less. Sergeant Bluff marks the far end of that range at $119,716, 91% above Sioux City.

Side-by-side: Compare 51106 vs 51104 →

ZIP Code Population Median income Establishments Density
51106 26,544 $78,434 753 329
51104 22,104 $75,362 295 1,099
51103 17,453 $58,197 265 639
51105 10,216 $51,786 218 649
51108 5,566 $81,205 132 48
51109 3,098 $79,034 57 66
51101 809 $15,300 413 265
51111 94 n/a 96 5
How we build city roll-ups · Guide: reading ZIP code data · HUD Fair Market Rents

Sioux City roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Sioux City, .