Erwin, SD Profile: Facts & Data

The Town of Erwin had a population of 46 as of July 1, 2024. Erwin ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in South Dakota. See peer rankings below.

The primary coordinate point for Erwin is located at latitude 44.4875 and longitude -97.4451 in Kingsbury County. The formal boundaries for the Town of Erwin encompass a land area of 0.48 sq. miles and a water area of 0 sq. miles. Kingsbury County is in the Central time zone (GMT -6).

The Town of Erwin has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Erwin, SD Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	46 (100%)
Population in Households	46 (100.0%)
Population in Families	40 (87.0%)
Population in Group Quarters¹	0
Population Density	97
Diversity Index²	12


INCOME
Median Household Income	$100,000
Average Household Income	$132,417
% of Income for Mortgage⁴	0%
Per Capita Income	$57,572
Wealth Index⁵	146
Socioeconomic Status Index⁶	Moderate (55.2)

HOUSING
Total HU (Housing Units)	28 (100%)
Owner Occupied HU	16 (57.1%)
Renter Occupied HU	4 (14.3%)
Vacant Housing Units	8 (28.6%)
Median Home Value	$340,000
Average Home Value	$340,625
Housing Affordability Index³	0

HOUSEHOLDS
Total Households	20
Average Household Size	2.30
Family Households	14
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Erwin, SD - Peer Comparisons by Rank and Percentile

The table below compares Erwin to the other 485 incorporated cities, towns and CDPs in South Dakota by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	3.34%	-2.28%
Households	1.21%	-1.02%
Families		-6.51%
Median Household Income		0.82%
Per Capita Income		2.52%
Owner Occupied HU		-1.28%

Variable Description	Rank	Percentile
Total Population	# 395	19th
Population Density	# 382	21st
Median Household Income	# 60	87th
Housing Affordability Index	# 26	5th
Per Capita Income	# 40	92nd
Diversity Index	# 360	25th

Erwin, SD Profile: Facts & Data

Erwin, South Dakota - Basic Facts

Erwin, SD Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Erwin, SD - Peer Comparisons by Rank and Percentile

Erwin, SD - Most Popular Things to Do

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