SDMap-doton-Onaka, 2004
Onaka’s story
119 years in pictures
Census counts: 164 in 1930, 13 in 2020. The archive holds 1 old photo or paper going back to 2004 and 3 maps from 1952 on.
- 1907Onaka is settled
OnakaSD
A town of 14, settled in 1907.
Is Onaka a good place to live?
100% of residents live below the poverty line in Onaka, against 9.5% in South Dakota’s towns and 9.6% across U.S. towns. No town among the 36 in South Dakota we compare has a higher share of households owning their home than Onaka. Onaka has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Small town
14 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Nearby towns
Getting set up
The full setup list →Moving to Onaka: who provides what
Who provides power, water and the rest in Onaka, and how to reach them.
PowerNorthWestern Energy13.3¢/kWh · EIA 2025HIFLD · EIA
WaterWEB WaterNo health-based violations in 5 years · EPAEPA
Internet1 providers100% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Onaka’s trash rules yet
Register to voteIn personSouth Dakota has no online registration; you can register in person until 15 days before Election Day or by mail (received 15 days before).vote.govWho runs elections hereFaulk County AuditorFaulk County; contacts on the Handbook page.FVAP, Jul 2023
ZIP code5746657466 100%Census 2020
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.
The data
Ordered by what stands out in Onaka.
Climate
In Onaka, expect four seasons and pleasant summers
Onaka has cold, snowy winters and pleasant summers, with very little rain. July afternoons reach 84°, January nights drop to 4° and about 35 inches of snow falls in a winter.
35″snow a winter
Typical low → high °F
Winter7–26°
Spring31–55°
Summer56–81°
Fall33–57°
Sep 28
typical first frost
May 10
typical last frost
+0.8°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020
Natural hazards
Cold waves leads a low hazard risk in Onaka
Expected storm and flood damage is lower than in 63% of U.S. communities.
37risk score of 100
FEMA risk score
Cold wavesInland floodingHail
2
federal disasters paid out here
FEMA National Risk Index · OpenFEMA
Health
How healthy Onaka is
Onaka beats the South Dakota average on 1 of 26 CDC measures and trails it on 9. 14% of Onaka adults have diabetes, above both South Dakota’s towns (10%) and U.S. towns (12%). 37% of adults have high blood pressure in Onaka.
| Onaka | South Dakota towns | U.S. towns | |
|---|---|---|---|
| Diabetes (CDC PLACES) | 14% | 10% | 12% |
| High blood pressure (CDC PLACES) | 37% | 31% | 35% |
| Sleep under 7 hours (CDC PLACES) | 31% | 30% | 36% |
| Frequent physical distress (CDC PLACES) | 14% | 12% | 14% |
26 measures vs. South Dakota
1 better16 too close to call9 worse
| What stands out | Onaka | SD |
|---|---|---|
| More adults treating high blood pressure | 79.4% | 75.9% |
| More adults with heart disease | 9.2% | 6.8% |
Avera Missouri River Health Center
18.3 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Keep exploring
Everything we know about Onaka
13pages on Onaka
The big questions
Out and about
After high school
Colleges nearby
None within 15 miles of Onaka; the nearest are
Northern State UniversityUniversity or college · Public · Aberdeen50.9 mi$8,845 in-state tuitionLake Area Technical CollegeCommunity college · Public · Watertown117.4 mi$6,718 in-state tuition
About 0 of every 100 Onaka residents are enrolled in college, against 5 across South Dakota.
About Onaka
Town in South Dakota, United States
Onaka (Dakota: oyanka; "place") is a town in Faulk County, South Dakota, United States. The population was 13 at the 2020 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Established
- 1907
- Area
- 0.3 sq mi
- Elevation
- 1,873 ft
- ZIP code
- 57466
- Area code
- 605
Questions about Onaka
Short answers, built from the data on this page.
Is Onaka, SD a good place to live?
Onaka has fewer than 1,000 residents, too few for fair grades; the figures below are still real.