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Williams, IA Profile: Facts & Data

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Williams, Iowa - Basic Facts

The City of Williams had a population of 296 as of July 1, 2025.

The primary coordinate point for Williams is located at latitude 42.4883 and longitude -93.5449 in Hamilton County. The formal boundaries for the City of Williams encompass a land area of 0.87 sq. miles and a water area of 0 sq. miles. Hamilton County is in the Central time zone (GMT -6).

The City of Williams 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 City of Williams is located within Township of Williams, a minor civil division (MCD) of Hamilton County.


Jump to... (On This Page!)
  1. Williams 2025 Demographic Data
  2. Growth Rates for Williams (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Iowa Research Tools (Easy Tools & Current Data)
  3. Iowa Data Comparison Tool - 2025 Demographics
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Williams, IA Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 296 (100%)
Population in Households 296 (100.0%)
Population in Families 209 (70.6%)
Population in Group Quarters1 0
Population Density 349
Diversity Index2 13
 
 

INCOME

Median Household Income $83,681
Average Household Income $96,134
% of Income for Mortgage4 18%
Per Capita Income $50,990
Wealth Index5 80
Socioeconomic Status Index6 Moderate (58.2)
 

HOUSING

Total HU (Housing Units) 176 (100%)
Owner Occupied HU 126 (71.6%)
Renter Occupied HU 31 (17.6%)
Vacant Housing Units 19 (10.8%)
Median Home Value $240,909
Average Home Value $288,671
Housing Affordability Index3 119
 

HOUSEHOLDS

Total Households 157
Average Household Size 1.89
Family Households 79
Average Family Size 3.00
NOTES
  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.
  6. 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 -0.69% -0.34%
Households 0.49% -0.51%
Families   5.86%
Median Household Income   1.24%
Per Capita Income   2.02%
Owner Occupied HU   0.16%

Williams, IA - Peer Comparisons by Rank and Percentile

The table below compares Williams to the other 1,026 incorporated cities, towns and CDPs in Iowa 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 # 579 44th
Population Density # 715 30th
Median Household Income # 323 69th
Housing Affordability Index # 524 51st
Per Capita Income # 159 85th
Diversity Index # 656 36th

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

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