Erwin, TN Profile: Facts & Data


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Erwin, Tennessee - Basic Facts

The Town of Erwin had a population of 6,119 as of July 1, 2020. Erwin ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Tennessee. See peer rankings below.

The primary coordinate point for Erwin is located at latitude 36.1451 and longitude -82.4168 in Unicoi County. The formal boundaries for the Town of Erwin encompass a land area of 4.04 sq. miles and a water area of 0 sq. miles. Unicoi County is in the Eastern time zone (GMT -5). The elevation is 1,670 feet.

The Town of Erwin (GNIS ID: 2406459) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Town of Erwin is located within Commissioner District 2, a minor civil division (MCD) of Unicoi County.

Alternate Unofficial Names for Erwin: Ervin, Longmire, Unika, Vanderbilt.


Erwin, TN Data & Demographics (As of July 1, 2020)


Total Population 6,119 (100%)
Population in Households 5,966 (97.5%)
Population in Families 4,711 (77.0%)
Population in Group Quarters1 153 ( 2.5%)
Population Density 1,483
Diversity Index2 24


Median Household Income $36,163
Average Household Income $44,399
% of Income for Mortgage4 14%
Per Capita Income $19,071
Wealth Index5 36


Total HU (Housing Units) 2,939 (100%)
Owner Occupied HU 1,821 (62.0%)
Renter Occupied HU 795 (27.1%)
Vacant Housing Units 323 (11.0%)
Median Home Value $124,349
Average Home Value $155,173
Housing Affordability Index3 175


Total Households 2,616
Average Household Size 2.28
Family Households 1,635
Average Family Size 3
  1. 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.
  2. 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.
  3. 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.
  4. 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).
  5. 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.


2010-2020 2020-2025
Population 0.03% -0.15%
Households -0.01% -0.18%
Families -0.07% -0.36%
Median Household Income   0.92%
Per Capita Income   1.79%
Owner Occupied HU   -0.23%


Erwin, TN - Peer Comparisons by Rank and Percentile

The table below compares Erwin to the other 429 incorporated cities, towns and CDPs in Tennessee by rank and percentile using July 1, 2020 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.

Variable Description Rank Percentile
Total Population # 97 78th
Population Density # 26 94th
Median Household Income # 344 20th
Housing Affordability Index # 111 26th
Per Capita Income # 359 17th
Diversity Index # 170 60th

Additional comparisons and rankings can be made with a VERY EASY TO USE Tennessee Census Data Comparison Tool.

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