What are the largest racial and ethnic groups in Pennington County, South Dakota?

The largest Pennington County racial/ethnic groups are White (78.3%) followed by Two or More (6.8%) and American Indian (6.3%) according to the most current (2023) US Census American Community 5-year dataset.

What’s the median age for Pennington County, South Dakota?

The median age of Pennington County residents is 39.7 years according to the most current (2023) US Census American Community Survey 5-year dataset.

Pennington County Demographic Statistics

2025 Population	2023 Population	Median Age	Median Income
119,142	115,903	39.7 years	$70,768

Pennington County Population Trends

Sources:

United States Census Bureau. P2 Hispanic or Latino, and Not Hispanic or Latino by Race. 2020 Census State Redistricting Data (Public Law 94-171) Summary File. August 2021.
United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2023. Population Division. May 2024.
United States Census Bureau. 2023 American Community Survey 5-Year Estimates. December 2024.
Cubit Planning. 2025 Population Projections. December 2024.

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2025 Projected Population

The 2025 projected population for Pennington County is 119,142. This projection assumes an annual rate of change of 1.4%, consistent with the population change from 2022 to 2023 according to the US Census Bureau's 2023 Population Estimates Program.

2023 Population

With 115,903 people, Pennington County is the 2nd most populated county in the state of South Dakota out of 66 counties according to the most current US Census data. But watch out, Pennington County, because Lincoln County with 73,238 people and Brown County with 37,733 people are right behind you.

Race & Ethnicity

The largest Pennington County racial/ethnic groups are White (78.3%) followed by Two or More (6.8%) and American Indian (6.3%).

Median Income

In 2023, the median household income of Pennington County households was $70,768. Pennington County households made slightly more than Sully County households ($70,250) and Brown County households ($70,239) . However, 7.2% of Pennington County families live in poverty.

Median Age

The median age for Pennington County residents is 39.7 years young.

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	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z	AA	AB	AC	AD	AE	AF	AG	AH	AI	AJ	AK	AL	AM	AN	AO	AP	AQ	AR	AS	AT	AU	AV	AW	AX	AY	AZ	BA	BB	BC	BD	BE	BF	BG	BH	BI	BJ	BK	BL	BM	BN	BO	BP	BQ	BR	BS	BT	BU	BV	BW	BX
1	Geography	State	County	City	Population			Median Household Income	Average Household Income	Household Income Distribution								Race & Ethnicity									Age & Sex																	Median Age	Educational Attainment						Poverty		Unemployment		Homes					Households							Land Area (square miles)	GEOID	Population				Percent Change			Notes
					Population																						Age & Sex																												Homes					Total
					Most Current Population Year	Population	Population Density (square miles)																				Total	Female								Male																			Total	Occupied Homes					Families	Married Couple Families		Single Parent Families		Non-families (unrelated people sharing a home)
					Most Current Population Year	Population	Population Density (square miles)			Households	Less than $25,000	$25,000 to $49,999	$50,000 to $74,999	$75,000 to $99,999	$100,000 to $149,999	$150,000 to $199,999	$200,000+	Total	White	Black	Native	Asian	Islander	Other	Two or More	Hispanic or Latino	Total	0 to 9 Years	10 to 19 Years	20 to 29 Years	30 to 39 Years	40 to 49 Years	50 to 59 Years	60 to 69 Years	70+ Years	0 to 9 Years	10 to 19 Years	20 to 29 Years	30 to 39 Years	40 to 49 Years	50 to 59 Years	60 to 69 Years	70+ Years		Population 25+ Years	No Diploma	High School	Some College	Bachelors Degree	Advanced Degree	Family Households	Family Poverty	Civilian Labor Force 16+ Years	Unemployment Rate	Total	Occupied	Owner-Occupied	Renter-Occupied	Median Value of Owner-Occupied Homes		Families	Total	With Own Children Under 18 Years	Total	With Own Children Under 18 Years	Non-families (unrelated people sharing a home)			2000	2010	2020	2030 Projected	2000 to 2010	2010 to 2020	2020 to 2030
5	name	state	county	city	most_current_pop_year	population	pop_dens_sq_mi	mhhi	avghhi	hhi_total_hh	hhi_hh_w_lt_25k	hhi_hh_w_25k_49k	hhi_hh_w_50k_74k	hhi_hh_w_75k_99k	hhi_hh_w_100k_149k	hhi_hh_w_150k_199k	hhi_hh_w_200k_plus	race_ethnicity_total	race_ethnicity_white	race_ethnicity_black	race_ethnicity_native	race_ethnicity_asian	race_ethnicity_islander	race_ethnicity_other	race_ethnicity_two	race_ethnicity_hispanic	age_total	age_f_0_9	age_f_10_19	age_f_20_29	age_f_30_39	age_f_40_49	age_f_50_59	age_f_60_69	age_f_70_plus	age_m_0_9	age_m_10_19	age_m_20_29	age_m_30_39	age_m_40_49	age_m_50_59	age_m_60_69	age_m_70_plus	median_age	edu_att_pop_25_plus	edu_att_no_diploma	edu_att_high_school	edu_att_some_college	edu_att_bachelors	edu_att_graduate	family_hh_total	family_poverty_pct	emp_status_civ_labor_force	unemployment_pct	housing_units	occupied_units	owner_occupied	renter_occupied	median_value_owner_occupied_units	households	hh_families	hh_mc_families	hh_mc_with_own_children_under_18	hh_sp_families	hh_sp_with_own_children_under_18	hh_non_families	aland_sq_mi	geoid	pop_2000	pop_2010	pop_2020	pop_2030	per_00_10	per_10_20	per_20_30	notes
16	Alabama	Alabama			2023	5,108,468	101	$62,027	$86,225	1,969,105	402,480	410,073	330,322	246,978	299,530	138,831	140,891	5,054,253	3,225,652	1,310,256	12,974	71,020	1,727	15,533	145,451	271,640	5,054,253	292,913	331,814	329,087	328,298	316,637	330,451	334,908	336,726	306,112	340,964	328,652	309,372	301,761	313,860	300,668	252,030	39	3,448,302	12%	30%	30%	17%	11%	1,274,643	11%	2,342,761	5%	2,316,192	1,969,105	1,377,062	592,043	$195,100	1,969,105	1,274,643	914,778	320,442	359,865	173,085	694,462	50,651	0400000US01	4,447,100	4,779,736	5,024,279	5,124,380	7%	5%	2%
17	Autauga County	Alabama			2023	60,342	102	$69,841	$93,367	22,523	3,292	4,606	4,109	3,406	3,440	1,776	1,894	59,285	42,497	11,829	42	599	0	218	1,912	2,188	59,285	3,266	4,264	3,563	3,806	4,421	4,187	3,196	3,913	3,575	3,996	3,625	4,036	3,490	4,064	3,164	2,719	39	40,767	10%	33%	29%	16%	12%	15,674	8%	27,070	3%	24,731	22,523	16,872	5,651	$197,900	22,523	15,674	11,861	5,155	3,813	1,623	6,849	594	0500000US01001	43,671	54,571	58,805	60,327	25%	8%	3%
18	Baldwin County	Alabama			2023	253,507	160	$75,019	$100,105	94,642	13,608	18,118	15,585	13,311	17,319	7,537	9,164	239,945	195,347	19,051	608	2,259	78	961	8,248	13,393	239,945	12,310	14,863	12,254	14,214	15,266	15,788	19,242	18,692	13,290	15,819	12,152	14,196	14,089	15,506	15,813	16,451	44	171,988	8%	28%	31%	21%	12%	64,593	7%	113,171	3%	128,518	94,642	73,381	21,261	$287,000	94,642	64,593	53,118	16,692	11,475	5,315	30,049	1,590	0500000US01003	140,415	182,265	231,767	261,777	30%	27%	13%
19	Barbour County	Alabama			2023	24,585	28	$44,290	$64,745	9,080	2,842	2,246	1,432	764	1,147	300	349	24,757	10,807	11,611	34	136	0	298	381	1,490	24,757	1,776	1,128	1,210	1,482	1,151	1,509	1,679	1,916	1,288	1,498	1,916	1,770	1,840	1,622	1,596	1,376	41	17,628	22%	38%	29%	7%	5%	5,990	18%	9,074	6%	11,702	9,080	6,128	2,952	$109,900	9,080	5,990	3,572	962	2,418	1,162	3,090	885	0500000US01005	29,038	27,457	25,223	24,288	-5%	-8%	-4%
20	Bibb County	Alabama			2023	21,868	35	$51,215	$67,735	7,571	1,919	1,797	1,215	1,024	1,000	374	242	22,152	16,333	4,585	24	51	0	20	395	744	22,152	1,241	1,107	1,136	1,397	1,295	1,323	1,390	1,439	1,215	1,462	1,637	1,416	2,035	1,779	1,175	1,105	41	15,931	20%	41%	28%	7%	4%	5,264	16%	9,375	10%	9,090	7,571	5,843	1,728	$132,600	7,571	5,264	3,971	1,187	1,293	689	2,307	622	0500000US01007	20,826	22,915	22,293	22,023	10%	-3%	-1%

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