Adelphi, OH Profile: Facts & Data


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Adelphi, Ohio - Basic Facts

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The Village of Adelphi had a population of 375 as of July 1, 2021.

The primary coordinate point for Adelphi is located at latitude 39.4667 and longitude -82.7471 in Ross County. The formal boundaries for the Village of Adelphi encompass a land area of 0.27 sq. miles and a water area of 0 sq. miles. Ross County is in the Eastern time zone (GMT -5). The elevation is 837 feet.

The Village of Adelphi 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 Village of Adelphi is located within Township of Colerain, a minor civil division (MCD) of Ross County.

Alternate Unofficial Names for Adelphi: Adelph, Adelpha, Adelphi Station, Adelphia.

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  1. Adelphi 2021 Demographic Data
  2. Growth Rates for Adelphi (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Ohio Research Tools (Easy Tools & Current Data)
  3. Ohio Data Comparison Tool - 2021 Demographics

Adelphi, OH Data & Demographics (As of July 1, 2021)


Total Population 375 (100%)
Population in Households 372 (99.2%)
Population in Families 308 (82.1%)
Population in Group Quarters1 3 ( 0.8%)
Population Density 1,369
Diversity Index2 9


Median Household Income $64,718
Average Household Income $80,314
% of Income for Mortgage4 11%
Per Capita Income $30,123
Wealth Index5 74


Total HU (Housing Units) 175 (100%)
Owner Occupied HU 126 (72.0%)
Renter Occupied HU 28 (16.0%)
Vacant Housing Units 22 (12.6%)
Median Home Value $169,048
Average Home Value $175,000
Housing Affordability Index3 241


Total Households 153
Average Household Size 2.43
Family Households 110
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.


2010-2021 2021-2026
Population -0.12% -0.27%
Households -0.06% -0.13%
Families 0.85% -0.37%
Median Household Income   3.17%
Per Capita Income   2.96%
Owner Occupied HU   -0.16%

Adelphi, OH - Peer Comparisons by Rank and Percentile

The table below compares Adelphi to the other 1,215 incorporated cities, towns and CDPs in Ohio by rank and percentile using July 1, 2021 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 # 936 23rd
Population Density # 541 56th
Median Household Income # 407 67th
Housing Affordability Index # 876 72nd
Per Capita Income # 485 60th
Diversity Index # 865 30th

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

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