Eureka, KS Profile: Facts & Data

The primary coordinate point for Eureka is located at latitude 37.8239 and longitude -96.2892 in Greenwood County. The formal boundaries for the City of Eureka encompass a land area of 2.28 sq. miles and a water area of 0 sq. miles. Greenwood County is in the Central time zone (GMT -6).

The City of Eureka 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.

Eureka, KS Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	2,369 (100%)
Population in Households	2,279 (96.2%)
Population in Families	1,676 (70.7%)
Population in Group Quarters¹	90 ( 3.8%)
Population Density	1,035
Diversity Index²	28


INCOME
Median Household Income	$42,470
Average Household Income	$61,014
% of Income for Mortgage⁴	10%
Per Capita Income	$26,854
Wealth Index⁵	41
Socioeconomic Status Index⁶	High (44.9)

HOUSING
Total HU (Housing Units)	1,302 (100%)
Owner Occupied HU	714 (54.8%)
Renter Occupied HU	326 (25.0%)
Vacant Housing Units	262 (20.1%)
Median Home Value	$69,184
Average Home Value	$106,838
Housing Affordability Index³	193

HOUSEHOLDS
Total Households	1,040
Average Household Size	2.19
Family Households	554
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.

Eureka, KS - Peer Comparisons by Rank and Percentile

The table below compares Eureka to the other 740 incorporated cities, towns and CDPs in Kansas 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.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	0.30%	-1.24%
Households	0.04%	-1.40%
Families		-1.68%
Median Household Income		1.93%
Per Capita Income		1.73%
Owner Occupied HU		-0.77%

Variable Description	Rank	Percentile
Total Population	# 104	86th
Population Density	# 205	72nd
Median Household Income	# 723	2nd
Housing Affordability Index	# 661	89th
Per Capita Income	# 668	10th
Diversity Index	# 272	64th

Eureka, KS Profile: Facts & Data

Eureka, Kansas - Basic Facts

Eureka, KS Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Eureka, KS - Peer Comparisons by Rank and Percentile

Eureka, KS - Most Popular Things to Do

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Greenwood County