US ZIP Code
57339

Fort Thompson, SD

Buffalo County  ·  South Dakota

● Active
👥 1,310 Population ↓ 14% since 2019
💰 $42,417 Median HH Income
▼ 44% below avg ↑ 48% since 2019
🎂 26.7 Median Age
🏠 $101,100 Median Home Value
▼ 64% below avg ↑ 194% since 2019
🎓 13.6% College Grads
▼ 65% below avg
📊 11.1% Unemployment
▲ 127% above avg ↓ 59% since 2019
ZIP Code Details
ZIP Code57339
CityFort Thompson
StateSouth Dakota (SD)
CountyBuffalo County
Area Code605
Elevation1,684 ft
Latitude44.126676
Longitude-99.463922
TimezoneChicago (DST)
FIPS46017
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 55.6% (728) Female 44.4% (582) ♀

Race & Ethnicity

White: 9.3%Hispanic: 3.1%Other: 1.5%Race
White9.3%
Hispanic3.1%
Other1.5%

Age Breakdown

Under 5
14%
5–17
22%
18–24
11%
25–44
25%
45–64
20%
65+
2%

Key Indicators

Median Age26.7 yrs
Avg Household Size3.69
Below Poverty36.3% ▲ 263% above avg
College Grads13.6% ▼ 65% below avg
Unemployment11.1% ▲ 127% above avg
No HS Diploma2 (0.3%)
HS Graduate316 (54.3%)
Some College107 (18.4%)
Associates78 (13.4%)
Bachelors48 (8.2%)
Graduate Degree31 (5.3%)

Education

No HS: 0.3%HS Grad: 54.3%Some College: 18.4%Associates: 13.4%Bachelors: 8.2%Graduate: 5.3%Edu
No HS0.3%
HS Grad54.3%
Some College18.4%
Associates13.4%
Bachelors8.2%
Graduate5.3%
Housing & Income

Housing Tenure

Owner: 46.8%Renter: 53.2%Tenure
Owner46.8%
Renter53.2%

Home Value Distribution

Under $50k
35%
$50k–100k
14%
$100k–150k
14%
$150k–200k
33%
$200k–300k
4%

Financials

Median HH Income$42,417 ▼ 44% below avg ↑ 48% since 2019
Median Home Value$101,100 ▼ 64% below avg ↑ 194% since 2019
Home/Income Ratio2.4x (nat avg ~3.5x)
Median Rent$535/mo ↑ 27% since 2019
Total Units422
Vacant Units67
Avg HH Size3.69

Income Distribution

Under $25k
41%
$25k–50k
14%
$50k–75k
22%
$75k–100k
12%
$100k–150k
8%
$150k–200k
1%
Over $200k
1%
Employment & Commute

How People Get to Work

Drove Alone
84%
Walked
6%
Work From Home
10%

Commute Time

Under 15 min
64%
15–30 min
25%
30–45 min
9%
Over 45 min
2%
Housing Stock

Year Built

1940s–1950s
12%
1960s–1970s
25%
1980s–1990s
10%
2000+
53%

Summary

Total Units422
Vacant67
Owner Occupied46.8%
Renter Occupied53.2%
Avg HH Size3.69
Frequently Asked Questions
ZIP code 57339 is in Fort Thompson, SD, in Buffalo County.
ZIP code 57339 is located in South Dakota (SD).
ZIP code 57339 is in Buffalo County, SD.
ZIP 57339 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 57339 is 1,310 people (ACS 2023).
The median household income in ZIP code 57339 is $42,417 (ACS 2023).
The median home value in ZIP 57339 is $101,100 (ACS 2023).
About ZIP Code 57339

ZIP code 57339 is located in Fort Thompson, South Dakota, within Buffalo County. With a population of 1,310, this is a sparsely populated ZIP code with a young community — the median age is 26.7 years. Economically, 57339 is a working-class ZIP code: the median household income of $42,417 is below the national average.

Real estate in ZIP code 57339 represents one of the more affordable housing markets in the country. The median home value of $101,100 is well below the national average. Renters can expect to pay around $535 per month in median rent. The area has a relatively balanced mix of owners (46.8%) and renters (53.2%). Median home values have increased by 194% since 2019.

The population of 57339 is racially diverse, with White as the largest group at 9.3%. Residents are less-educated — 13.6% hold a bachelor's degree or higher, which is well below the national average. Poverty affects a significant share of residents at 36.3%. Household income has grown by 48% since 2019.

The unemployment rate in 57339 stands at 11.1%, which is more than double the national average. As in most parts of the country, driving alone is the dominant commute mode at 79%.

Overall, ZIP code 57339 in Fort Thompson, SD is characterized as working-class, less-educated, and a young community. With 1,310 residents, a median household income of $42,417, and a median home value of $101,100, it offers a clear picture of life in this part of South Dakota.