Township · South Dakota
Split Rock Township, South Dakota
Split Rock Township, township, in Minnehaha County, South Dakota. Split Rock Township had 3,086 residents on July 1, 2025 by the Census Bureau's estimate, down 3.5% since 2020; the 2020 Census counted 3,200 and the ACS 2020-2024 5-year estimates put it at 3,143 (±26). GEOID 4609960300.
Residents, July 2025 estimate
3,086
Census Bureau estimate (no margin published)
2020 Census count: 3,200 · ACS 2020-2024: 3,143 ±26
Median household income
$147,717
±$28,190 (90% margin)
South Dakota: $75,081
Median home value
$499,600
±$51,228 (90% margin)
South Dakota: $257,400
Median gross rent
$987
±$424 (90% margin)
South Dakota: $946
Where is Split Rock Township and what county is it in?
Split Rock Township is a township in Minnehaha County, South Dakota. It covers 28.5 square miles of land, 112 residents per square mile in 2020.
3 places lie inside Split Rock Township: Anderson (CDP, 388 in 2020), Pine Lakes Addition (CDP, 306 in 2020) and Rowena (CDP, 68 in 2020).
Split Rock Township is in the Sioux Falls, SD-MN metropolitan statistical area, which takes in 5 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Split Rock Township, and is it growing?
The Census Bureau estimates that 3,086 people lived in Split Rock Township on July 1, 2025, down 3.5% since 2020, while South Dakota grew 5.5%. The 2020 Census counted 3,200 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 3,143 (±26).
| Measure | Split Rock Township | Minnehaha County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,143±26 | 203,289 | −44 |
| Households | 1,180±108 | 84,814 | no clear change |
| Average household size | 2.66±0.24 | 2.33 | no clear change |
| Housing units | 1,282±128 | 89,418 | no clear change |
Split Rock Township's population since 2000
From 3,025 in 2000 to 3,086 in 2025: up 2.0%. The 2000, 2010 and 2020 figures are census counts, each for Split Rock Township as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Split Rock Township?
The median resident of Split Rock Township is 49.3 years old; 22.2% are under 18 and 17.1% are 65 or older. The largest group is non-Hispanic white residents at 95.3%, then non-Hispanic residents of some other race at 2.1%.
| Measure | Split Rock Township | Minnehaha County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 49.3±9.7 | 36.0 | no clear change |
| Under 18 years | 22.2%±4.9 pts | 25.4% | – |
| 65 years and over | 17.1%±6.4 pts | 13.9% | – |
| Male | 49.5%±2.5 pts | 51.0% | – |
| Hispanic or Latino (any race) | 0.5%±0.9 pts | 6.6% | – |
| White alone, not Hispanic | 95.3%±3.2 pts | 78.6% | no clear change |
| Black or African American alone, not Hispanic | 0.0%±0.8 pts | 6.3% | – |
| Asian alone, not Hispanic | 0.0%±0.8 pts | 1.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.8 pts | 1.8% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.8 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.0%±2.2 pts | 4.9% | – |
| Some other race alone, not Hispanic | 2.1%±2.3 pts | 0.3% | – |
| Born outside the United States | 2.8%±3.0 pts | 7.6% | – |
| Speak a language other than English at home (age 5+) | 7.2%±6.0 pts | 10.3% | – |
| Civilian veterans (age 18+) | 5.0%±2.3 pts | 6.7% | – |
| With a disability | 5.3%±2.7 pts | 10.9% | – |
| No health insurance coverage | 1.3%±1.2 pts | 8.2% | – |
| High school graduate or higher (age 25+) | 94.5%±3.8 pts | 92.7% | – |
| Bachelor's degree or higher (age 25+) | 49.8%±8.9 pts | 35.2% | no clear change |
| Graduate or professional degree (age 25+) | 20.4%±7.1 pts | 10.5% | – |
| Lived in the same house a year earlier | 94.3%±3.6 pts | 86.0% | – |
| Moved from another state in the past year | 1.5%±1.4 pts | 2.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Split Rock Township earn?
Half of Split Rock Township's 1,180 households earn less than $147,717 a year (±$28,190), against $76,880 in Minnehaha County and $75,081 in South Dakota. In 2015-2019 it was $120,139 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Split Rock Township | Minnehaha County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $147,717±$28,190 | $76,880 | no clear change |
| Mean household income | $191,435±$29,831 | $102,921 | – |
| Per capita income | $70,973±$10,630 | $43,062 | no clear change |
| People below the poverty line | 0.6%±0.9 pts | 8.8% | – |
| Children under 18 below the poverty line | 0.0%±3.5 pts | 10.3% | – |
| Households receiving SNAP | 1.0%±1.7 pts | 8.4% | – |
| Households with a computer | 98.1%±1.6 pts | 96.7% | – |
| Households with a broadband subscription | 89.1%±7.1 pts | 92.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Split Rock Township?
Owners occupy 93.2% of Split Rock Township's occupied homes and renters 6.8%. The median owner-occupied home is valued at $499,600 by its owner (±$51,228). The median renter pays $987 a month including utilities.
| Measure | Split Rock Township | Minnehaha County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $499,600±$51,228 | $287,600 | +$91,256 |
| Median gross rent | $987±$424 | $978 | −$620 |
| Renters paying 35% or more of income on rent | 21.3%±35.2 pts | 32.7% | – |
| Median monthly owner costs, with a mortgage | $2,464±$335 | $1,727 | – |
| Owner-occupied homes | 93.2%±6.0 pts | 63.1% | no clear change |
| Renter-occupied homes | 6.8%±6.0 pts | 36.9% | – |
| Housing units | 1,282±128 | 89,418 | no clear change |
| Homeowner vacancy rate | 0.0%±2.1 pts | 0.8% | – |
| Rental vacancy rate | 0.0%±26.3 pts | 6.3% | – |
| Single-family detached homes | 90.9%±5.9 pts | 58.5% | – |
| Mobile homes | 2.3%±1.7 pts | 3.9% | – |
| Built 2020 or later | 1.3%±2.1 pts | 3.1% | – |
| Built 2010 to 2019 | 4.6%±3.5 pts | 15.3% | – |
| Built 1939 or earlier | 6.1%±4.1 pts | 10.9% | – |
| Households with no vehicle | 0.8%±1.5 pts | 5.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Split Rock Township work and get to work?
67.0% of Split Rock Township's workers drive alone and 12.1% work from home. The average trip to work takes 18.5 minutes.
| Measure | Split Rock Township | Minnehaha County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.9%±6.5 pts | 74.1% | – |
| Unemployment rate | 0.0%±1.4 pts | 2.5% | – |
| Drove alone to work | 67.0%±11.4 pts | 77.2% | – |
| Carpooled | 20.9%±12.9 pts | 7.8% | – |
| Public transportation | 0.0%±1.4 pts | 0.7% | – |
| Walked | 0.0%±1.4 pts | 2.0% | – |
| Worked from home | 12.1%±5.6 pts | 11.1% | no clear change |
| Mean travel time to work | 18.5 min±1.3 | 17.8 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Split Rock Township?
No census tract lies mostly in Split Rock Township; 6 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 104.01Minnehaha County | 6,769 | $119,569 |
| Tract 104.03Minnehaha County | 3,990 | $147,623 |
| Tract 105.02Minnehaha County | 4,018 | $106,403 |
| Tract 4.08Minnehaha County | 4,808 | $85,224 |
| Tract 104.02Minnehaha County | 2,472 | $113,472 |
| Tract 18.06Minnehaha County | 4,914 | $70,191 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Split Rock Township) · Census block assignment files
How does Split Rock Township compare with other places in South Dakota?
By the Census Bureau's July 2025 estimates, Split Rock Township is the 3,492nd-most populous of the 16,079 U.S. towns and townships that have one and the 2nd-most populous of 895 in South Dakota.
Split Rock Township ranks 4th of 82 places in South Dakota with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 2nd | 895 |
| Growth 2020-2025 (PEP) | 64th | 73 |
| Residents per square mile | 74th | 84 |
| Median household income | 4th | 82 |
| Per capita income | 5th | 83 |
| Median home value | 4th | 81 |
| Median gross rent | 16th | 72 |
| Bachelor's degree or higher | 4th | 81 |
| Median age | 9th | 83 |
| Owner-occupied share | 8th | 84 |
| Work from home | 8th | 44 |
| Travel time to work | 31st | 84 |
Split Rock Township's figures with every place in South Dakota (CSV)
Every place in South Dakota, sortable · Compare Split Rock Township with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Split Rock Township?
26 of the 57 figures for Split Rock Township on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Split Rock Township are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.