Thayer, IL Profile: Facts, Map & Data


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Thayer, Illinois - Basic Facts

The Village of Thayer had a population of 693 as of July 1, 2017.

The primary coordinate point for Thayer is located at latitude 39.5404 and longitude -89.7579 in Sangamon County. The formal boundaries for the Village of Thayer (see map below) encompass a land area of 0.61 sq. miles and a water area of 0 sq. miles. Sangamon County is in the Central time zone (GMT -6). The elevation is 643 feet.

The Village of Thayer (GNIS ID: 2399964) 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 Thayer is located within Township of Auburn, a minor civil division (MCD) of Sangamon County.

Beneath the boundary map are tables with Thayer population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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Village of Thayer, IL Boundary Map

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Boundary Maps: Township of Auburn | Sangamon County | Illinois Counties

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Thayer, IL Data & Demographics (As of July 1, 2017)


Total Population 693
Daytime Population: Workers 22
Daytime Population: Residents 287
Total Daytime Population (TDP) 309
Ratio TDP/Total Population1 0.45
Population in Households 693
Population in Familes 603
Population in Group Qrtrs 0
Population Density2 1,145
Diversity Index3 11


Median Household Income $80,385
Average Household Income $87,917
Per Capita Income $33,299


Total Housing Units 315 (100%)
Owner Occupied HU 239 (75.9%)
Renter Occupied HU 45 (14.3%)
Vacant Housing Units 30 ( 9.5%)
Median Home Value $117,045
Average Home Value $124,583


Total Households 285
Average Household Size 2.43
Family Households 212
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 0.0% 0.06%
Households 0.1% 0.07%
Families 1.45% 0.0%
Median Household Income   1.71%
Per Capita Income   2.47%

Thayer, IL - Peer Comparisons by Rank and Percentile

The table below compares Thayer to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2017 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 # 815 41st
Population Density # 669 51st
Diversity Index # 773 43rd
Median Household Income # 160 88th
Per Capita Income # 274 80th

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

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