PlainZIP

Sioux City, IA · standard

ZIP Code 51106

Woodbury County, Iowa — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

26,544
329/sq mi
$78,434
Median income
$200,200
Median home value
28.6%
Bachelor's or higher

The verdict

Sioux City pairs an above-median household income with below-median home values, in a low-density, homeowner-dominated area.

Top 40%
household income, US ZIPs
43th pct
home value, US ZIPs
329
people per sq mi
70%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51106 against every reporting US ZIP.

ZIP code 51106 is classified by USPS as a standard delivery area and covers roughly 80.7 square miles in Sioux City, Woodbury County, Iowa. The area is home to 26,544 residents, producing a population density of 329 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 51106 against Iowa and the nation.

On the economic side, the median household income for ZIP 51106 sits at $78,434 (2% above the Iowa average), while per-capita income is $39,145. The poverty rate stands at 13.6% and the unemployment rate at 4.1%. On housing, the median home value is $200,200 (14% above the state average) with median rent at $1,117 per month, and 70.2% of occupied units are owner-occupied, a direct signal of whether 51106 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 28.6% of adults hold a bachelor's degree or higher, the median age is 36.4, and the average commute is 15 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Woodbury County, so you can benchmark 51106 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →

Top industries in ZIP 51106

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 51106.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 51106, Sioux City, IA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.

Quick Facts

26,544

Population

80.7

Area (sq mi)

329

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 51106?

36.4

Median Age

49.9%

Male

50.1%

Female

6.2%

Foreign-Born

White 78.2%
African American 6.3%
Asian 1.6%
American Indian or Alaska Native 1.8%
Native Hawaiian or Pacific Islander 0.5%
Two or More Ethnicities 8.9%
Hispanic or Latino 10.2%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$78,434

Median Household Income

+2% vs state

$39,145

Per Capita Income

13.6%

Poverty Rate

4.1%

Unemployment Rate

15.3 min

Mean Commute Time

How ZIP 51106 ranks nationally

Household income vs. every US ZIP code

Median household income — the full national distribution, with this ZIP marked

$78,434 Top 40% higher than 60% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau — ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 60.1%
Bachelor's Degree or Higher 28.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

11,843

Total Housing Units

11,249

Occupied Units

594

Vacant Units

2.42

Avg Household Size

Occupancy Type

Owner 70.2%
Renter 29.8%

$200,200

Median Home Value

+14% vs state

$1,117

Median Rent

1963

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+8.1%

YoY Change (2024)

237

HPI Index (2000 = 100)

+137%

Total Change Since 2000

Home values in ZIP 51106 have increased 8.1% over the past year (2024). Since 2000, this ZIP has seen +137% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.5% 168
2021 +9.2% 183
2022 +14.3% 209
2023 +4.9% 219
2024 +8.1% 237

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 753 business establishments in ZIP 51106, employing approximately 13,392 people with a combined annual payroll of $553,392,000.

753

Businesses

13,392

Employees

$553.4M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Retail trade 161 21.4%
Health care and social assistance 102 13.6%
Accommodation and food services 84 11.2%
Other services (except public administration) 78 10.4%
Construction 57 7.6%
Finance and insurance 49 6.5%
Professional, scientific, and technical services 43 5.7%
Administrative and support and waste management and remediation services 37 4.9%
Wholesale trade 29 3.9%
Real estate and rental and leasing 29 3.9%
Manufacturing 20 2.7%
Arts, entertainment, and recreation 19 2.5%
Transportation and warehousing 16 2.1%
Information 13 1.7%
Educational services 9 1.2%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 51106 vs 51105 →

ZIP 51106 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 51106 ranks the most populous — useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 51106 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 51106 ranks #5 of 9 neighboring ZIPs — local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
51105 Sioux City, IA 10,216 3.7 mi
51054 Sergeant Bluff, IA 5,110 6.0 mi
51101 Sioux City, IA 809 4.2 mi
51111 Sioux City, IA 94 5.1 mi
68776 South Sioux City, NE 15,447 6.2 mi
51108 Sioux City, IA 5,566 7.1 mi
51104 Sioux City, IA 22,104 6.4 mi
51030 Lawton, IA 1,737 6.9 mi
51103 Sioux City, IA 17,453 7.2 mi
51007 Bronson, IA 730 8.1 mi

More ZIP Codes in Woodbury County

51104 standard
Sioux City, IA
Pop: 22,104
51103 standard
Sioux City, IA
Pop: 17,453
51105 standard
Sioux City, IA
Pop: 10,216
51108 standard
Sioux City, IA
Pop: 5,566
51054 standard
Sergeant Bluff, IA
Pop: 5,110
51109 standard
Sioux City, IA
Pop: 3,098

Related Areas

Woodbury County Sioux City, IA Iowa

Frequently Asked Questions

What county is ZIP code 51106 in? ▼
ZIP code 51106 (Sioux City) is located in Woodbury County, Iowa. Woodbury County contains multiple ZIP codes, see the full list at /counties/woodbury-ia.
What is the population of ZIP code 51106? ▼
ZIP code 51106 in Sioux City, IA has a population of 26,544 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51106? ▼
The median household income in ZIP 51106 is $78,434, which is 3% above the national average of $76,288.
What is the average home value in ZIP 51106? ▼
The median home value in ZIP 51106 is $200,200, which is 28% below the national average of $278,155.
What is the demographic makeup of ZIP 51106? ▼
The largest racial group in ZIP 51106 is White at 78.2%. Hispanic or Latino residents make up 10.2% of the population.
How many businesses are in ZIP code 51106? ▼
ZIP code 51106 has 753 business establishments employing approximately 13,392 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51106? ▼
The top industries by establishment count in ZIP 51106 are: Retail trade (161), Health care and social assistance (102), Accommodation and food services (84). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 51106? ▼
According to the FHFA House Price Index, home values in ZIP 51106 increased by 8.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 137%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 51106? ▼
In ZIP code 51106, 60.1% of residents aged 25+ have a high school diploma or higher, and 28.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 51106? ▼
The mean commute time for workers in ZIP code 51106 is 15.3 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 51106? ▼
In ZIP code 51106, approximately 70.2% of occupied housing units are owner-occupied and 29.8% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51106? ▼
The poverty rate in ZIP code 51106 is 13.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Sioux City, IA

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

Read our methodology to see how this data is sourced, computed, and verified.