42% of Grange Township adults 25 and older hold a bachelor’s degree or more, above both the South Dakota town median (33%) and the median of U.S. towns (29%). Children under 18 are 10% of residents (24% statewide); adults 18 to 34 are 34% of residents (22% statewide). Population is up 5.1% here since 2020, to 144 by the Census Bureau’s 2025 estimate.

49.4median age · SD 38

Grange TownshipSouth DakotaUnited States

SDU.S.

Ages · share of residents

34%

Education · adults 25 and older

No diploma2%

High school43%

Some college10%

Associate’s4%

Bachelor’s40%

Graduate2%

Women and men · all residents

Somewhere between 43% and 66% women

The Census survey reached too few of Grange Township’s residents to say more: its margin here is ±11.4 points. Across South Dakota, 49.2% of residents are women.

Ages and education in Grange Township
	Grange Township	SD	U.S.
Under 10	4.3%	13.1%	11.6%
10 to 17	5.7%	11.2%	10.3%
18 to 24	0%	9.3%	9.1%
25 to 34	34%	12.6%	13.7%
35 to 44	3.5%	12.6%	13.2%
45 to 54	12.8%	10.7%	12.2%
55 to 64	25.5%	12.6%	12.7%
65 to 74	2.8%	11%	10.2%
75 and older	11.3%	7%	7%
No diploma	1.6%	6.8%	10.4%
High school	42.5%	29%	26%
Some college	10.2%	19.9%	19.1%
Associate’s	3.9%	12.3%	8.8%
Bachelor’s	40.2%	21.9%	21.6%
Graduate	1.6%	10%	14.1%

Full pageGrange Township by the numbersOpen the page

Ages49.4 median age · 14% are 65 or older Schooling42% have a four-year degree Homes100% own their home · Homeowners Income$132K a year · Median household income

Census population estimates, 2025 · U.S. Census Bureau · ACS 2020-2024 5-year estimates · in a town of 100, single groups can be off by several points

Climate

Grange Township stands out in South Dakota and nationally: a typical July afternoon there is cooler

Expect cold, snowy winters and pleasant summers in Grange Township. July afternoons reach 81°, January nights drop to 4° and about 61 inches of snow falls in a winter.

61″snow a winter

Typical low → high °F

Winter7–25°

Spring32–53°

Summer57–79°

Fall35–56°

Oct 1

typical first frost

May 7

typical last frost

+1.0°

vs. the 20th-century average

Full pageGrange Township’s climate pageOpen the page

A year of weatherJuly highs 81°, January lows 4°Rain & snow61″ of snow a winter · 26 inches of rain and snow a year Heating & coolingMostly a heating bill Then and now+1.0° vs. the 20th century · Warmer than the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Natural hazards

Grange Township faces a low natural-hazard risk, led by inland flooding

Grange Township’s FEMA risk score stands at 36 of 100, where South Dakota’s towns sit at 54 of 100 and U.S. towns at 44 of 100. Of the losses FEMA expects here, 34% come from inland flooding and 20% from cold waves. Expected storm and flood damage is lower than in 64% of U.S. communities.

36risk score of 100

FEMA risk score

Inland floodingCold wavesTornadoes

Full pageGrange Township’s hazards pageOpen the page

What it facesLow risk Flood claims0 paid flood claims · No paid flood claims on record Past disasters22 disaster declarations · Declared for the county Get ready0.6 events a year, on average · Ready for inland flooding

FEMA National Risk Index · OpenFEMA

Health

A smaller share of adults have been diagnosed with depression in Grange Township than in most of South Dakota or the rest of the country

CDC measures, 26 in all: Grange Township beats South Dakota on 2 and trails on 1. In Grange Township, 14% of adults report frequent mental distress.

	Grange Township	South Dakota towns	U.S. towns
Frequent mental distress (CDC PLACES)	14%	15%	17%
Depression (CDC PLACES)	19%	22%	23%
Sleep under 7 hours (CDC PLACES)	30%	30%	36%
Binge drink (CDC PLACES)	18%	19%	16%