What city is ZIP code 51023?

ZIP code 51023 is in Hawarden, IA (Sioux County).

What county is ZIP code 51023 in?

ZIP code 51023 is mostly in Sioux County, Iowa.

How many people live in ZIP code 51023?

About 3,473 people live in the 51023 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 51023

Hawarden, IA, Sioux County

Population

3,473

Land area

119.9sq mi

People per sq mi

City

Hawarden

ZIP 51023 and nearby ZIP codes

Full map

ZIP 51023 at a glance

ZIP 51023 (Hawarden) is 50% less dense than Iowa as a whole.
Households here earn a median of $80,357 a year, 7% more than the Iowa figure of $75,059.
A typical owner-occupied home is valued at $173,300 (17% below Iowa) and median rent is $926 a month.

Local data for ZIP 51023

Counts from official public data

Housing and community stats

ZIP 51023, American Community Survey 2020-2024

Full profile

Median household income

$80,357

Poverty rate

7.1%

Median home value

$173,300

Prices +15.4% in a year

Median rent

$926/mo

Homeownership

70.9%

Bachelor's or higher

21.3%

Median age

36.9

Average commute

16.0 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

920

$36.5M annual payroll

PPP loans

$7.9M

310 loans

Campaign donations

$6,179

26% D, 29% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 51023, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: hail

Storm events since 1996

958

Countywide, mostly hail

Flood insurance policies

151

1.2% of homes, county

July high / Jan low

85° / 7°F

29.9 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 51023, CDC PLACES estimates

All 40 measures

Obesity

35.7%

U.S. 33.3% +2.4 pts

Diabetes

12.1%

U.S. 12.1% about the same

Smoking

16.1%

U.S. 12.8% +3.3 pts

Uninsured (18-64)

11.6%

U.S. 11.1% +0.5 pts

Frequently asked questions

What city is ZIP code 51023?: ZIP code 51023 is in Hawarden, IA (Sioux County).
What county is ZIP code 51023 in?: ZIP code 51023 is mostly in Sioux County, Iowa.
How many people live in ZIP code 51023?: About 3,473 people live in the 51023 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.