Frederick is a town in northwestern Brown County, South Dakota, United States. The population was 215 at the 2020 census. Home to the annual Frederick Finn Fest, the town is part of the Aberdeen Micropolitan Statistical Area.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Town numbers

ZIP code57441

Area code605

Living in Frederick

Health in Frederick

Compared with South Dakota

7better than SD·3worse

of 26 measures CDC estimates. The other 16 are too close to call.

Conditions 1▲ 3▼ 8 close Habits 1▲ 3 close Care 4▲ 3 close Mind 1▲ 2 close

BetterToo close to callWorse

What stands out

8.8%Fewer older adults who have lost all their teethSD 12.7% · better 15.4%Fewer binge drinkersSD 18.8% · better 12.1%More adults who have had cancerSD 9.2% · worse

Care nearby

Avera St. LukesAberdeen · 25.6 mi · ER

Horizon Health - AberdeenAberdeen · 25.8 mi · sliding-scale fees

Primary careShortage · county-wide

DentalShortage · county-wide

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Frederick · CMS · HRSAHealth in Frederick →

Natural hazards in Frederick

Low

Expected storm and flood damage is higher than in 37% of U.S. communities.

🌊 Inland flooding🥶 Cold waves🧊 Hail

4Does Frederick flood?paid flood claims since 1997 1Disasters that paid out herefederal disaster sent FEMA money to Frederick

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Frederick →

Climate in Frederick

Full climate →

Frederick has cold, snowy winters and pleasant summers, with very little rain. A typical July afternoon reaches 83°, a January night drops to 2°, and about 44 inches of snow falls in a normal winter.

24° / 6°Winter

54° / 31°Spring

80° / 57°Summer

56° / 34°Fall

How much snow does Frederick get?About 44 inches a winter.Rain & snow →When is the first frost?Around Sep 29, with the last in spring around May 7.Frost dates →Is it warmer than it used to be?+1.1° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Frederick →

Schools in Frederick

All Frederick schools →

B⁺

School Grade B+

The public schools Frederick’s kids attend outperform 71% of South Dakota’s districts on state tests. Among towns with similar incomes, they rank near the top.

DistrictFrederick Area School District 06-2Schools3

Frederick Area Elementary - 02 B+Elementary · Grades PK–5 · 98 students Frederick Area Middle School - 03 B+Middle · Grades 6–8 · 30 students Frederick High School - 01 B-High · Grades 9–12 · 59 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results, graded within SD. Ratings are from neighbors.