Home > SD > Gregory County > Herrick > Zip 57538

Zip Code 57538 — Herrick, SD

ZIP Code 57538 is associated with Herrick, SD, in Gregory County. The listed population estimate is 236; estimated density is 0.7 people per square mile. Among records with population estimates, it ranks #5 of 6 in Gregory County and #289 of 372 in SD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (43.121670, -99.155510)

Data MetricLocal Statistic
Postal / Zip Code57538
Primary CityHerrick
State / ProvinceSD
CountyGregory
Total Population236
Population Density0.7 people/sq mi
TimezoneAmerica/Chicago

How 57538 Compares

MetricZIP 57538Gregory County recordsSD records
Population estimate2363,849 (sum)906,188 (sum)
Population Density0.7 /sq mi----
County population rank#5 of 6----
State population rank#289 of 372----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in SD

ZIP CodeCityDistancePopulation estimate
ZIP 57571Saint Charles6.4 mi22
ZIP 57317Bonesteel8.9 mi573
ZIP 57523Burke9.4 mi1,041
ZIP 57335Fairfax19.8 mi303
ZIP 57533Gregory20.3 mi1,674

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →