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Zip Code 57345 — Highmore, SD

ZIP Code 57345 is associated with Highmore, SD, in Hyde County. The listed population estimate is 941; estimated density is 0.6 people per square mile. Among records with population estimates, it ranks #1 of 3 in Hyde County and #147 of 372 in SD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (44.568700, -99.450090)

Data MetricLocal Statistic
Postal / Zip Code57345
Primary CityHighmore
State / ProvinceSD
CountyHyde
Total Population941
Population Density0.6 people/sq mi
TimezoneAmerica/Chicago

How 57345 Compares

MetricZIP 57345Hyde County recordsSD records
Population estimate9411,177 (sum)906,188 (sum)
Population Density0.6 /sq mi----
County population rank#1 of 3----
State population rank#147 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 57540Holabird10.4 mi223
ZIP 57371Ree Heights14.4 mi238
ZIP 57536Harrold18.9 mi277
ZIP 57362Miller20.1 mi1,967
ZIP 57346Stephan22.1 mi13

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 →