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Alden, Illinois facts for kids

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Alden, Illinois
Alden, Illinois is located in Illinois
Alden, Illinois
Alden, Illinois
Location in Illinois
Alden, Illinois is located in the United States
Alden, Illinois
Alden, Illinois
Location in the United States
Country United States
State Illinois
County McHenry
 • Total 0.13 sq mi (0.33 km2)
 • Land 0.13 sq mi (0.33 km2)
 • Water 0.00 sq mi (0.00 km2)
1,004 ft (306 m)
 • Total 113
 • Density 896.83/sq mi (347.31/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
Area codes 815 & 779
FIPS code 17-00594
GNIS feature ID 403385

Alden, elevation 1,004 feet (306 meters), is an unincorporated community and census-designated place in McHenry County, Illinois, United States. It was named a CDP prior to the 2020 census which showed a population of 113.


Alden was laid out in 1844, and named after Alden, New York, the native home of a large share of the first settlers. A post office called Alden has been in operation since 1844.


The community is situated in the heart of Alden Township at the junction of Alden Road (County Highway V-12) and Illinois Route 173. The headwaters of Nippersink Creek originate at the High Point Unit of the McHenry County Conservation District, flowing to the southeast and east. In terms of geographic coordinates, the community is located at 42°27′32″N 88°31′04″W / 42.45889°N 88.51778°W / 42.45889; -88.51778 (42.4589075, -88.5178757) In terms of the Public Land Survey System, Alden is located within the Southeast Quarter of Section 15 and the Northeast Quarter of Section 23, Township 46 North, Range 6 East of the Third Principal Meridian. Alden is served by the Harvard, Illinois 60033 post office.

Points of interest

A small commercial district is located at the highway junction. The Alden Township facility is just south of the community at 8515 Alden Road.


Historical population
Census Pop.
2020 113
U.S. Decennial Census

2020 census

Alden CDP, Illinois - Demographic Profile
(NH = Non-Hispanic)
Race / Ethnicity Pop 2020 % 2020
White alone (NH) 102 90.27%
Black or African American alone (NH) 0 0.00%
Native American or Alaska Native alone (NH) 0 0.00%
Asian alone (NH) 0 0.00%
Pacific Islander alone (NH) 0 0.00%
Some Other Race alone (NH) 1 0.88%
Mixed Race/Multi-Racial (NH) 5 4.42%
Hispanic or Latino (any race) 5 4.42%
Total 113 100.00%

Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.

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