What city is ZIP code 57538?

ZIP code 57538 is in Herrick, SD (Gregory County).

What county is ZIP code 57538 in?

ZIP code 57538 is mostly in Gregory County, South Dakota.

How many people live in ZIP code 57538?

About 236 people live in the 57538 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 57538

Herrick, SD, Gregory County

Population

236

Land area

122.8sq mi

People per sq mi

City

Herrick

ZIP 57538 and nearby ZIP codes

Full map

ZIP 57538 at a glance

ZIP 57538 (Herrick) is 84% less dense than South Dakota as a whole.

Local data for ZIP 57538

Counts from official public data

Restaurants2

Economy and federal money

Businesses, pandemic loans and political donations

Details

PPP loans

$981K

68 loans

Campaign donations

$840

0% D, 100% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 57538, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: cold wave

Storm events since 1996

706

Countywide, mostly hail

Flood insurance policies

0.0% of homes, county

July high / Jan low

87° / 11°F

25.9 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 57538, CDC PLACES estimates

All 40 measures

Obesity

38.5%

U.S. 33.3% +5.2 pts

Diabetes

15.0%

U.S. 12.1% +2.9 pts

Smoking

18.4%

U.S. 12.8% +5.6 pts

Uninsured (18-64)

8.6%

U.S. 11.1% -2.5 pts

Frequently asked questions

What city is ZIP code 57538?: ZIP code 57538 is in Herrick, SD (Gregory County).
What county is ZIP code 57538 in?: ZIP code 57538 is mostly in Gregory County, South Dakota.
How many people live in ZIP code 57538?: About 236 people live in the 57538 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.