Erwin, SD demographics:
population, income, and more

Total population
105
110.0% year-over-year change
Median household income
$86,250/yr
60.5% year-over-year change
Housing units
36
38.5% year-over-year change

Erwin population

How many people live in Erwin

Erwin is home to 105 residents, according to the most recent Census data. Gender-wise, 59% of Erwin locals are male, and 41% are female.

Total population
105
110.0% year-over-year change
Gender ratio
Male
59%
62
Female
41%
43
Value Percent YoY change
Male 62 59% 158.3%
Female 43 41% 65.4%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Erwin is 20, with the population distributed as follows: about 41.9% are children under 15, then 8.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.8% of the population, while another 14.3% fall into the 45 to 64 bracket. Finally, around 11.4% are 65 or older.

Median age
19.9
Age breakdown
Under 15
41.9%
15 to 24
8.6%
25 to 44
23.8%
45 to 64
14.3%
Over 65
11.4%
Value Percent YoY change
Under 15 44 41.9% 388.9%
15 to 24 9 8.6% N/A
25 to 44 25 23.8% 92.3%
45 to 64 15 14.3% 36.4%
Over 65 12 11.4% -29.4%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 105 100% 110.0%
Racial breakdown
White
100%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
0%
Other
0%
Value Percent
White 105 100%

Households in Erwin

A peek inside Erwin households

Erwin has 22 households, with an average of 5 members in each. Of these, 81.8% are families, while the remaining 18.2% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
22
22.2% year-over-year change
Average people per household
5
Non-family households
4
Family households
18
Value Percent YoY change
Non-family households 4 18.2% -42.9%
Family households 18 81.8% 63.6%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Erwin

The housing landscape of Erwin

Erwin's housing consists of 36 units, with 94.4% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 5.6% of the housing landscape.

Housing units
36
38.5% year-over-year change
Housing types
Value Percent
1 unit, detached 34 94.4%
Mobile home 2 5.6%
Homes built since 2020
2
100.0% year-over-year change

The age of buildings in Erwin

In Erwin, the median construction year is 1938. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 30 83.3% 57.9%
Built between 1950 and 1959 1 2.8% 0.0%
Built between 1970 and 1979 2 5.6% 100.0%
Built between 1980 and 1989 1 2.8% 0.0%
Built in 2020 or later 2 5.6% 100.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Erwin occupancy rates

Meanwhile, 38.9% of all homes on the local market sit vacant.

Occupied housing units
22
22.2% year-over-year change
Occupancy breakdown
Renter occupied
0
Owner occupied
22
Value Percent YoY
change
Owner occupied 22 100% 22.2%
Unoccupied housing units
38.9%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Erwin housing costs

Median housing costs per month
$867/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Erwin

Erwin education at a glance

About 55.2% of the population in Erwin went to high school, while 19% pursued college studies. Another 15.5% earned an associate degree and 6.9% hold a bachelor’s. Meanwhile, 3.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 32 55.2% 68.4%
College diploma 11 19% 22.2%
Associate degree 9 15.5% 125.0%
Bachelor's degree 4 6.9% -33.3%
Graduate degree 2 3.4% -33.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Erwin

How much people earn in Erwin

The average annual household income in Erwin was $75,677 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +31% change from the previous year. At the same time, the median income stood at $86,250, reflecting a +60.5% shift over the same period.

Average household income in Erwin
$75,677/year
31.0% year-over-year change
Median household income in Erwin
$86,250/year
60.5% year-over-year change

Erwin income by age

In Erwin, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $97,500. Those with someone between 45 and 64 in charge, often well established professionally, earn $84,167 overall. Overall, 100% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $97,500 -6.0%
45 - 64 $84,167 N/A
Over 65 $50,000 25.0%
Above poverty level
105
Below poverty level
0
Value Percent YoY
change
Above poverty level 105 100% 123.4%

Employment in Erwin

Workforce and job types in Erwin

The job market in Erwin is powered by 31 working residents, spread across a range of industries and roles. 71% of the working population are employed in professional or administrative positions, while 29% are in hands-on or service-based jobs.

Workforce demographics

Working population
31
34.8% year-over-year change
White collar
22
Blue collar
9
Value Percent YoY change
White collar 22 71% 29.4%
Blue collar 9 29% 50.0%
Employer type
Self employees
0%
Private companies
67.7%
Governmental workers
22.6%
Not for profit companies
9.7%
Value Percent YoY change
Private companies 21 67.7% 0.0%
Governmental workers 7 22.6% 250.0%
Not for profit companies 3 9.7% N/A

Transportation in Erwin

How people get around in Erwin

Means of transportation
Value Percent YoY change
Car 28 90.3% 21.7%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Erwin by zipcode?

Zipcode Population Number of households Median income Average income
57233 350 57 $82,917 $102,846

Explore more communities

FAQs about Erwin demographics 

What is the total population of Erwin?

Erwin has a total population of 105 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +110.0% compared to a year ago.

What is the gender ratio in Erwin?

The gender ratio in Erwin is as follows:
  • 59% males (62 residents)
  • 41% females (43 residents)

What is the median age in Erwin?

The median age in Erwin is 19.9.

What is the age distribution of the population in Erwin?

The age distribution in Erwin is as follows:
  • Under 15: 41.9% (44 residents)
  • Ages 15-24: 8.6% (9 residents)
  • Ages 25-44: 23.8% (25 residents)
  • Ages 45-64: 14.3% (15 residents)
  • Over 65: 11.4% (12 residents)

What is the racial and ethnic makeup of Erwin?

The racial and ethnic makeup of Erwin is as follows:
  • White: 100% (105 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 0% (0 residents)
  • Other: 0% (0 residents)

What percentage of the population in Erwin are U.S.-born citizens?

U.S.-born citizens represent 100% of the population in Erwin.

How many housing units are there in Erwin?

There are 36 housing units in Erwin, reflecting a +38.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Erwin and what is the average household size?

Erwin has a total of 22 households, with an average of 5 people in each.

What is the median household income in Erwin?

Erwin has a median household income of $86,250, representing a +60.5% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Erwin?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 71% (22 residents)
  • Blue-collar workers: 29% (9 residents)

Places of employment:
  • Self-employed: 0% (0 residents)
  • Private companies: 67.7% (21 residents)
  • Governmental workers: 22.6% (7 residents)
  • Not-for-profit companies: 9.7% (3 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025