Decker, IN Profile: Facts & Data

Decker, Indiana - Basic Facts

The Town of Decker had a population of 176 as of July 1, 2025.

The primary coordinate point for Decker is located at latitude 38.5189 and longitude -87.5231 in Knox County. The formal boundaries for the Town of Decker encompass a land area of 0.18 sq. miles and a water area of 0 sq. miles. Knox County is in the Eastern time zone (GMT -5).

The Town of Decker 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 Decker is located within Township of Johnson, a minor civil division (MCD) of Knox County.

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Decker, IN Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	176 (100%)
Population in Households	176 (100.0%)
Population in Families	147 (83.5%)
Population in Group Quarters¹	0
Population Density	934
Diversity Index²	15


INCOME
Median Household Income	$105,514
Average Household Income	$131,666
% of Income for Mortgage⁴	16%
Per Capita Income	$59,848
Wealth Index⁵	123
Socioeconomic Status Index⁶	Moderate (54.9)

HOUSING
Total HU (Housing Units)	102 (100%)
Owner Occupied HU	70 (68.6%)
Renter Occupied HU	10 ( 9.8%)
Vacant Housing Units	22 (21.6%)
Median Home Value	$265,517
Average Home Value	$252,321
Housing Affordability Index³	146

HOUSEHOLDS
Total Households	80
Average Household Size	2.20
Family Households	53
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

102 (100%)

Owner Occupied HU

70 (68.6%)

Renter Occupied HU

10 ( 9.8%)

Vacant Housing Units

22 (21.6%)

Median Home Value

$265,517

Average Home Value

$252,321

Housing Affordability Index³

146

HOUSEHOLDS

Total Households

Average Household Size

2.20

Family Households

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.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	-2.31%	-0.23%
Households	-0.24%	-0.25%
Families		0.37%
Median Household Income		3.74%
Per Capita Income		4.79%
Owner Occupied HU		-0.29%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

-2.31%

-0.23%

Households

-0.24%

-0.25%

Families

0.37%

Median Household Income

3.74%

Per Capita Income

4.79%

Owner Occupied HU

-0.29%

Decker, IN - Peer Comparisons by Rank and Percentile

The table below compares Decker to the other 976 incorporated cities, towns and CDPs in Indiana by rank and percentile using July 1, 2025 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	# 701	28th
Population Density	# 469	52nd
Median Household Income	# 88	91st
Housing Affordability Index	# 777	80th
Per Capita Income	# 45	95th
Diversity Index	# 641	34th

Variable Description

Rank

Percentile

Total Population

# 701

28th

Population Density

# 469

52nd

Median Household Income

# 88

91st

Housing Affordability Index

# 777

80th

Per Capita Income

# 45

95th

Diversity Index

# 641

34th

Indiana Census Data Comparison Tool

Decker, IN Profile: Facts & Data

Decker, Indiana - Basic Facts

Decker, IN Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Decker, IN - Peer Comparisons by Rank and Percentile

Decker, IN - Most Popular Things to Do

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Knox County