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Zip Code 57446 — Hecla, SD

ZIP Code 57446 is associated with Hecla, SD, in Brown County. The listed population estimate is 223; estimated density is 0.6 people per square mile. Among records with population estimates, it ranks #12 of 13 in Brown County and #294 of 372 in SD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (45.866980, -98.154230)

Data MetricLocal Statistic
Postal / Zip Code57446
Primary CityHecla
State / ProvinceSD
CountyBrown
Total Population223
Population Density0.6 people/sq mi
TimezoneAmerica/Chicago

How 57446 Compares

MetricZIP 57446Brown County recordsSD records
Population estimate22337,902 (sum)906,188 (sum)
Population Density0.6 /sq mi----
County population rank#12 of 13----
State population rank#294 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 57449Houghton9.5 mi357
ZIP 57432Claremont14.1 mi507
ZIP 57421Amherst14.4 mi75
ZIP 57433Columbia17.4 mi318
ZIP 57441Frederick17.6 mi670

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 →