Gregory County, South Dakota Demographics 2026

Name: Gregory County, South Dakota Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Gregory County, South Dakota has a population of 4,016, the 40th most populous county in South Dakota. The median household income is $62,917 and the median home value is $139,900. The poverty rate is 9.5%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Gregory County Quick Facts

Population 4,016

Median Household Income $62,917

Median Home Value $139,900

Poverty Rate 9.5%

Unemployment Rate 2.3%

Median Age 44.7 years

Homeownership Rate 76.7%

Affordability Ratio 2.2x

Bachelor's Degree+ 22.2%

High School Graduation 92.5%

Cities/Places 7

Population 4,016 40th of 66

Median Income $62,917 16% lower than state

Poverty Rate 9.5%

Unemployment 2.3%

How Gregory County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	3,993	4,016	+0.6%
Median household income	$52,432	$62,917	+20.0%
Median home value	$129,000	$139,900	+8.4%

Median Household Income

Gregory

$62,917

$75,081

National

$80,734

Median Home Value

Gregory

$139,900

$257,400

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 17.1%

$25K-$50K 25.1%

$50K-$100K 30.4%

$100K+ 27.5%

Detailed income brackets

Under $10K

3.3%

$10K-$15K

6.0%

$15K-$20K

4.5%

$20K-$25K

3.3%

$25K-$30K

3.2%

$30K-$35K

5.5%

$35K-$40K

7.1%

$40K-$45K

4.3%

$45K-$50K

4.9%

$50K-$60K

6.3%

$60K-$75K

9.9%

$75K-$100K

14.2%

$100K-$125K

9.2%

$125K-$150K

6.2%

$150K-$200K

5.1%

$200K+

7.0%

Employment

2.3% Unemployment Rate State: 2.9%|National: 5.2%

64.7% Labor Force Participation

Housing Overview

Owner 76.7%

Renter 23.3%

Affordability Index Very Affordable

2.2x home value to income ratio

Median gross rent $614/mo 11.7% of median household income annually

People & Demographics

Age Distribution

Under 18

24.4%

18-34

15.5%

35-54

20.8%

55-74

27.6%

75+

11.7%

Race & Ethnicity

Diversity Index

Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 35 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Gregory County

City	Population	Median Income	Poverty	Home Value
Gregory	1,379	$51,450	7.3%	$115,300
Burke	708	$52,500	8.1%	$150,000
Bonesteel	286	$43,409	23.5%	$74,100
Fairfax	119	$72,656	5.9%	$62,100
Dallas	102	$63,333	13.7%	$77,300
Herrick	73	$53,125	0.0%	N/A
St. Charles	6	N/A	50.0%	N/A

Explore South Dakota Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Gregory County is located in South Dakota with a total population of 4,016. It is the 40th most populous county out of 66 in South Dakota. The county encompasses 7 Census-designated places.

Age Demographics

The median age in Gregory County is 44.7 years. This is 18% higher than the state median of 38.0 years. 11.7% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Gregory County is $62,917. This is 16% lower than the state median of $75,081. It is also 22% lower than the national median of $80,734. The poverty rate stands at 9.5%. This is 20% lower than the state poverty rate of 11.9%. The unemployment rate is 2.3%. This is 22% lower than the state rate of 2.9%. The median home value is $139,900. Housing costs are 46% lower than the state median of $257,400. With a home-value-to-income ratio of just 2.2x, Gregory County is one of the most affordable housing markets in the area. 76.7% of occupied housing units are owner-occupied. This homeownership rate is 12% higher than the state average of 68.6%.

Race & Ethnicity

Gregory County has a predominantly White (non-Hispanic) population, comprising 86.2% of all residents. Asian residents account for 1.1%. The Black or African American population (0.9%) is well below the state average of 2.1%. The Hispanic or Latino population (0.6%) is well below the state average of 4.8%.

Education

22.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 30% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.5%.

Data Sources & Methodology

All figures for Gregory County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against South Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Gregory County, South Dakota?

Gregory County has a population of 4,016, making it the 40th most populous county in South Dakota.

What is the median income in Gregory County?

The median household income in Gregory County is $62,917 with a poverty rate of 9.5%.

How many cities are in Gregory County, South Dakota?

Gregory County contains 7 Census-designated places.