City · South Dakota
Lennox, South Dakota
Lennox, city, in Lincoln County, South Dakota. Lennox had 2,657 residents on July 1, 2025 by the Census Bureau's estimate, up 9.8% since 2020; the 2020 Census counted 2,423 and the ACS 2020-2024 5-year estimates put it at 2,468 (±21). GEOID 4636380.
Residents, July 2025 estimate
2,657
Census Bureau estimate (no margin published)
2020 Census count: 2,423 · ACS 2020-2024: 2,468 ±21
Median household income
$81,761
±$6,351 (90% margin)
South Dakota: $75,081
Median home value
$235,900
±$29,153 (90% margin)
South Dakota: $257,400
Median gross rent
$745
±$328 (90% margin)
South Dakota: $946
Where is Lennox and what county is it in?
Lennox is a city in Lincoln County, South Dakota. It covers 1.8 square miles of land, 1,329 residents per square mile in 2020.
Lennox 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 Lennox, and is it growing?
The Census Bureau estimates that 2,657 people lived in Lennox on July 1, 2025, up 9.8% since 2020, faster than South Dakota (+5.5%). The 2020 Census counted 2,423 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,468 (±21).
| Measure | Lennox | Lincoln County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,468 ±21 | 70,638 | no clear change |
| Households | 983 ±103 | 27,879 | no clear change |
| Average household size | 2.44 ±0.25 | 2.52 | no clear change |
| Housing units | 1,032 ±97 | 28,710 | no clear change |
Lennox's population since 2000
From 2,037 in 2000 to 2,657 in 2025: up 30.4%. The 2000, 2010 and 2020 figures are census counts, each for Lennox 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 Lennox?
The median resident of Lennox is 38.0 years old; 24.0% are under 18 and 18.1% are 65 or older. The largest group is non-Hispanic white residents at 85.5%, then non-Hispanic residents of some other race at 5.4%.
| Measure | Lennox | Lincoln County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.0 ±5.5 | 35.9 | no clear change |
| Under 18 years | 24.0% ±4.9 pts | 26.5% | – |
| 65 years and over | 18.1% ±4.7 pts | 14.7% | – |
| Male | 48.7% ±5.0 pts | 49.4% | – |
| Hispanic or Latino (any race) | 5.3% ±3.7 pts | 3.2% | – |
| White alone, not Hispanic | 85.5% ±6.2 pts | 89.0% | −11.0 pts |
| Black or African American alone, not Hispanic | 1.2% ±1.7 pts | 2.3% | – |
| Asian alone, not Hispanic | 0.0% ±1.0 pts | 1.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.4% ±0.5 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.2% ±1.9 pts | 3.0% | – |
| Some other race alone, not Hispanic | 5.4% ±4.4 pts | 0.5% | – |
| Born outside the United States | 0.5% ±0.6 pts | 4.9% | – |
| Speak a language other than English at home (age 5+) | 2.7% ±2.1 pts | 5.8% | – |
| Civilian veterans (age 18+) | 4.1% ±2.0 pts | 6.1% | – |
| With a disability | 11.9% ±5.0 pts | 9.2% | – |
| No health insurance coverage | 5.9% ±4.2 pts | 4.1% | – |
| High school graduate or higher (age 25+) | 86.9% ±6.0 pts | 96.5% | – |
| Bachelor's degree or higher (age 25+) | 24.1% ±6.3 pts | 44.4% | no clear change |
| Graduate or professional degree (age 25+) | 7.1% ±2.7 pts | 14.5% | – |
| Lived in the same house a year earlier | 85.9% ±6.2 pts | 87.2% | – |
| Moved from another state in the past year | 3.6% ±2.8 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 Lennox earn?
Half of Lennox's 983 households earn less than $81,761 a year (±$6,351), against $99,166 in Lincoln County and $75,081 in South Dakota. In 2015-2019 the median was $58,714 in 2024 dollars, so it rose by $23,047 after inflation. 9.6% of residents live below the poverty line.
| Measure | Lennox | Lincoln County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $81,761 ±$6,351 | $99,166 | +$23,047 |
| Mean household income | $96,957 ±$14,385 | $132,275 | – |
| Per capita income | $38,456 ±$5,920 | $52,585 | +$8,055 |
| People below the poverty line | 9.6% ±5.6 pts | 5.6% | – |
| Children under 18 below the poverty line | 10.1% ±10.9 pts | 6.9% | – |
| Households receiving SNAP | 11.5% ±9.4 pts | 3.3% | – |
| Households with a computer | 94.3% ±4.2 pts | 97.3% | – |
| Households with a broadband subscription | 88.0% ±5.2 pts | 95.7% | – |
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 Lennox?
Owners occupy 74.3% of Lennox's occupied homes and renters 25.7%. The median owner-occupied home is valued at $235,900 by its owner (±$29,153). The median renter pays $745 a month including utilities, and 39.5% of renters pay 35% or more of their income on rent.
| Measure | Lennox | Lincoln County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $235,900 ±$29,153 | $348,300 | +$72,218 |
| Median gross rent | $745 ±$328 | $1,260 | no clear change |
| Renters paying 35% or more of income on rent | 39.5% ±19.1 pts | 25.1% | no clear change |
| Median monthly owner costs, with a mortgage | $1,558 ±$232 | $1,937 | – |
| Owner-occupied homes | 74.3% ±7.8 pts | 71.2% | no clear change |
| Renter-occupied homes | 25.7% ±7.8 pts | 28.8% | – |
| Housing units | 1,032 ±97 | 28,710 | no clear change |
| Homeowner vacancy rate | 0.0% ±3.4 pts | 0.6% | – |
| Rental vacancy rate | 6.3% ±9.2 pts | 3.4% | – |
| Single-family detached homes | 71.6% ±9.2 pts | 61.0% | – |
| Mobile homes | 10.4% ±9.3 pts | 1.4% | – |
| Built 2020 or later | 1.2% ±1.7 pts | 6.1% | – |
| Built 2010 to 2019 | 6.7% ±3.3 pts | 29.8% | – |
| Built 1939 or earlier | 21.5% ±6.8 pts | 8.3% | – |
| Households with no vehicle | 2.7% ±2.1 pts | 2.1% | – |
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 many new homes is Lennox building?
Builders took permits for 14 new housing units in Lennox in 2025 (12 in single-family houses), 5.3 per 1,000 residents against 5.7 across South Dakota.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Lennox work and get to work?
81.6% of Lennox's workers drive alone and 11.2% work from home. The average trip to work takes 23.2 minutes.
| Measure | Lennox | Lincoln County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.5% ±6.2 pts | 75.6% | – |
| Unemployment rate | 1.0% ±1.3 pts | 1.7% | – |
| Drove alone to work | 81.6% ±6.7 pts | 80.1% | – |
| Carpooled | 6.2% ±3.4 pts | 5.6% | – |
| Public transportation | 0.0% ±2.0 pts | 0.1% | – |
| Walked | 0.7% ±1.4 pts | 1.3% | – |
| Worked from home | 11.2% ±5.6 pts | 12.3% | – |
| Mean travel time to work | 23.2 min ±3.0 | 19.3 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 Lennox?
No census tract lies mostly in Lennox; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 103Lincoln County | 4,996 | $88,007 |
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 Lennox) · Census block assignment files
How does Lennox compare with other places in South Dakota?
By the Census Bureau's July 2025 estimates, Lennox is the 6,718th-most populous of the 19,476 U.S. incorporated places that have one and the 29th-most populous of 310 in South Dakota.
Lennox ranks 26th 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 | 29th | 310 |
| Growth 2020-2025 (PEP) | 11th | 73 |
| Residents per square mile | 25th | 84 |
| Median household income | 26th | 82 |
| Per capita income | 40th | 83 |
| Median home value | 33rd | 81 |
| Median gross rent | 51st | 72 |
| Poverty rate | 33rd | 55 |
| Bachelor's degree or higher | 56th | 81 |
| Median age | 52nd | 83 |
| Owner-occupied share | 33rd | 84 |
| Work from home | 10th | 44 |
| Travel time to work | 11th | 84 |
Lennox's figures with every place in South Dakota (CSV)
Every place in South Dakota, sortable · Compare Lennox 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 Lennox?
21 of the 57 figures for Lennox 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 Lennox 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' public schools in Lennox.