What city is ZIP code 51027?

ZIP code 51027 is in Ireton, IA (Sioux County).

What county is ZIP code 51027 in?

ZIP code 51027 is mostly in Sioux County, Iowa.

How many people live in ZIP code 51027?

About 1,280 people live in the 51027 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 51027

Ireton, IA, Sioux County

Population

1,280

Land area

90sq mi

People per sq mi

City

Ireton

ZIP 51027 and nearby ZIP codes

Full map

ZIP 51027 at a glance

ZIP 51027 (Ireton) is 75% less dense than Iowa as a whole.
Households here earn a median of $100,893 a year, 34% more than the Iowa figure of $75,059.
A typical owner-occupied home is valued at $227,200 (9% above Iowa) and median rent is $1,094 a month.

Local data for ZIP 51027

Counts from official public data

Housing and community stats

ZIP 51027, American Community Survey 2020-2024

Full profile

Median household income

$100,893

Poverty rate

8.1%

Median home value

$227,200

Prices +12.8% in a year

Median rent

$1,094/mo

Homeownership

82.7%

Bachelor's or higher

28.6%

Median age

36.8

Average commute

21.5 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

194

$10M annual payroll

PPP loans

$5.1M

246 loans

Campaign donations

$2,658

0% D, 35% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 51027, 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 51027, CDC PLACES estimates

All 40 measures

Obesity

35.6%

U.S. 33.3% +2.3 pts

Diabetes

10.5%

U.S. 12.1% -1.6 pts

Smoking

15.9%

U.S. 12.8% +3.1 pts

Uninsured (18-64)

7.7%

U.S. 11.1% -3.4 pts

Frequently asked questions

What city is ZIP code 51027?: ZIP code 51027 is in Ireton, IA (Sioux County).
What county is ZIP code 51027 in?: ZIP code 51027 is mostly in Sioux County, Iowa.
How many people live in ZIP code 51027?: About 1,280 people live in the 51027 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.