PlainZIP

Sioux City, IA · standard

ZIP Code 51108

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

5,566
48/sq mi
$81,205
Median income
$169,700
Median home value
28.7%
Bachelor's or higher

The verdict

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

Top 36%
household income, US ZIPs
34th pct
home value, US ZIPs
48
people per sq mi
83%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51108 against every reporting US ZIP.

ZIP code 51108 is classified by USPS as a standard delivery area and covers roughly 116.0 square miles in Sioux City, Woodbury County, Iowa. The area is home to 5,566 residents, producing a population density of 48 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 51108 against Iowa and the nation.

On the economic side, the median household income for ZIP 51108 sits at $81,205 (6% above the Iowa average), while per-capita income is $38,642. The poverty rate stands at 6.5% and the unemployment rate at 5.6%. On housing, the median home value is $169,700 (3% below the state average) with median rent at $1,350 per month, and 83.3% of occupied units are owner-occupied, a direct signal of whether 51108 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 28.7% of adults hold a bachelor's degree or higher, the median age is 37.6, and the average commute is —. We also surface 9 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Woodbury County, so you can benchmark 51108 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 51108

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 51108.

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 51108, 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

5,566

Population

116.0

Area (sq mi)

48

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 51108?

37.6

Median Age

54.2%

Male

45.8%

Female

6.2%

Foreign-Born

White 79.2%
African American 1.6%
Asian 1.5%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.7%
Hispanic or Latino 18.8%

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?

$81,205

Median Household Income

+6% vs state

$38,642

Per Capita Income

6.5%

Poverty Rate

5.6%

Unemployment Rate

How ZIP 51108 ranks nationally

Household income vs. every US ZIP code

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

$81,205 Top 36% higher than 64% 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%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $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 60.5%
Bachelor's Degree or Higher 28.7%

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

What does housing look like?

2,160

Total Housing Units

2,160

Occupied Units

0

Vacant Units

2.76

Avg Household Size

Occupancy Type

Owner 83.3%
Renter 16.7%

$169,700

Median Home Value

-3% vs state

$1,350

Median Rent

1971

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

+4.8%

YoY Change (2024)

236

HPI Index (2000 = 100)

+136%

Total Change Since 2000

Home values in ZIP 51108 have increased 4.8% over the past year (2024). Since 2000, this ZIP has seen +136% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.7% 161
2021 +7.0% 172
2022 +15.5% 199
2023 +13.3% 225
2024 +4.8% 236

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 132 business establishments in ZIP 51108, employing approximately 1,415 people with a combined annual payroll of $53,972,000.

132

Businesses

1,415

Employees

$54.0M

Annual Payroll

12

Industry Sectors

Industry Establishments % of Total
Construction 18 13.6%
Retail trade 16 12.1%
Administrative and support and waste management and remediation services 14 10.6%
Health care and social assistance 12 9.1%
Transportation and warehousing 10 7.6%
Real estate and rental and leasing 10 7.6%
Accommodation and food services 10 7.6%
Other services (except public administration) 10 7.6%
Professional, scientific, and technical services 9 6.8%
Manufacturing 7 5.3%
Finance and insurance 6 4.5%
Wholesale trade 5 3.8%

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 51108 vs 51105 →

ZIP 51108 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 51108 ranks #6 by population — useful context the national average alone can't give.

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

ZIP 51108 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 51108 ranks #3 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 4.1 mi
51104 Sioux City, IA 22,104 3.4 mi
51101 Sioux City, IA 809 5.5 mi
51106 Sioux City, IA 26,544 7.1 mi
51024 Hinton, IA 2,070 5.6 mi
51103 Sioux City, IA 17,453 5.7 mi
51109 Sioux City, IA 3,098 6.7 mi
51038 Merrill, IA 1,535 9.8 mi
68776 South Sioux City, NE 15,447 8.6 mi

More ZIP Codes in Woodbury County

51106 standard
Sioux City, IA
Pop: 26,544
51104 standard
Sioux City, IA
Pop: 22,104
51103 standard
Sioux City, IA
Pop: 17,453
51105 standard
Sioux City, IA
Pop: 10,216
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 51108 in? ▼
ZIP code 51108 (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 51108? ▼
ZIP code 51108 in Sioux City, IA has a population of 5,566 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51108? ▼
The median household income in ZIP 51108 is $81,205, which is 6% above the national average of $76,288.
What is the average home value in ZIP 51108? ▼
The median home value in ZIP 51108 is $169,700, which is 39% below the national average of $278,155.
What is the demographic makeup of ZIP 51108? ▼
The largest racial group in ZIP 51108 is White at 79.2%. Hispanic or Latino residents make up 18.8% of the population.
How many businesses are in ZIP code 51108? ▼
ZIP code 51108 has 132 business establishments employing approximately 1,415 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51108? ▼
The top industries by establishment count in ZIP 51108 are: Construction (18), Retail trade (16), Administrative and support and waste management and remediation services (14). There are 12 industry sectors represented in total.
How have home values changed in ZIP code 51108? ▼
According to the FHFA House Price Index, home values in ZIP 51108 increased by 4.8% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 136%. 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 51108? ▼
In ZIP code 51108, 60.5% of residents aged 25+ have a high school diploma or higher, and 28.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 51108? ▼
In ZIP code 51108, approximately 83.3% of occupied housing units are owner-occupied and 16.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51108? ▼
The poverty rate in ZIP code 51108 is 6.5% 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.