La Harpe, IL Profile: Facts, Map & Data


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La Harpe, Illinois - Basic Facts

The City of La Harpe had a population of 1,277 as of July 1, 2017. La Harpe ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for La Harpe is located at latitude 40.5848 and longitude -90.9695 in Hancock County. The formal boundaries for the City of La Harpe (see map below) encompass a land area of 1.36 sq. miles and a water area of 0 sq. miles. Hancock County is in the Central time zone (GMT -6). The elevation is 699 feet.

The City of La Harpe (GNIS ID: 2395566) 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 La Harpe is located within Township of La Harpe, a minor civil division (MCD) of Hancock County.

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

Alternate Unofficial Names for La Harpe: Fort La Harpe, Franklin, Hancock Prairie, Laharpe.

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City of La Harpe, IL Boundary Map

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Boundary Maps: Township of La Harpe | Hancock County | Illinois Counties

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


Total Population 1,277
Daytime Population: Workers 381
Daytime Population: Residents 702
Total Daytime Population (TDP) 1,083
Ratio TDP/Total Population1 0.85
Population in Households 1,252
Population in Familes 1,032
Population in Group Qrtrs 25
Population Density2 937
Diversity Index3 4


Median Household Income $41,032
Average Household Income $57,066
Per Capita Income $24,670


Total Housing Units 612 (100%)
Owner Occupied HU 438 (71.6%)
Renter Occupied HU 115 (18.8%)
Vacant Housing Units 59 ( 9.6%)
Median Home Value $75,837
Average Home Value $94,121


Total Households 553
Average Household Size 2.26
Family Households 378
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 0.46% -0.02%
Households 0.67% 0.11%
Families 1.23% 0.0%
Median Household Income   2.9%
Per Capita Income   3.43%

La Harpe, IL - Peer Comparisons by Rank and Percentile

The table below compares La Harpe 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 # 635 54th
Population Density # 788 42nd
Diversity Index # 1281 6th
Median Household Income # 1148 16th
Per Capita Income # 884 35th

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

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