Effingham, Illinois

== Demographics ==
{{US Census population
|1870= 2383
|1880= 3065
|1890= 3260
|1900= 3774
|1910= 3898
|1920= 4024
|1930= 4978
|1940= 6180
|1950= 6892
|1960= 8172
|1970= 9458
|1980= 11270
|1990= 11851
|2000= 12384
|2010= 12328
|2020= 12252
|footnote=U.S. Decennial Census<ref name="DecennialCensus">{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=Census of Population and Housing|publisher=Census.gov|access-date=June 4, 2015|df=mdy}}</ref><ref name="2020 Census">{{cite web|url=https://data.census.gov/cedsci/table?q=Effingham%20city,%20Illinois|title=Effingham city, Illinois|publisher=United States Census Bureau|access-date=February 14, 2022|url-status=live|archive-url=https://web.archive.org/web/20220214063043/https://data.census.gov/cedsci/table?q=Effingham%20city,%20Illinois|archive-date=February 14, 2022 }}</ref>
}}As of the [[2020 United States census|2020 census]]<ref>{{Cite web |title=Explore Census Data |url=https://data.census.gov/cedsci/profile?g=1600000US1722736 |access-date=2022-06-28 |website=data.census.gov}}</ref> there were 12,252 people, 5,205 households, and 3,029 families residing in the city. The population density was {{Convert|1,160.78|PD/sqmi|PD/km2}}. There were 5,862 housing units at an average density of {{Convert|555.38|/sqmi|/km2}}. The racial makeup of the city was 91.00% [[White (U.S. Census)|White]], 0.85% [[African American (U.S. Census)|African American]], 0.25% [[Native American (U.S. Census)|Native American]], 1.31% [[Asian (U.S. Census)|Asian]], 0.02% [[Pacific Islander (U.S. Census)|Pacific Islander]], 1.80% from [[Race (United States Census)|other races]], and 4.77% from two or more races. [[Hispanic (U.S. Census)|Hispanic]] or [[Latino (U.S. Census)|Latino]] of any race were 4.60% of the population.

There were 5,205 households, out of which 27.9% had children under the age of 18 living with them, 41.77% were married couples living together, 11.82% had a female householder with no husband present, and 41.81% were non-families. 33.26% of all households were made up of individuals, and 16.64% had someone living alone who was 65 years of age or older. The average household size was 2.91 and the average family size was 2.29.

The city's age distribution consisted of 22.9% under the age of 18, 8.0% from 18 to 24, 26.4% from 25 to 44, 23.6% from 45 to 64, and 19.2% who were 65 years of age or older. The median age was 37.1 years. For every 100 females, there were 87.1 males. For every 100 females age 18 and over, there were 82.3 males.

The median income for a household in the city was $52,551, and the median income for a family was $69,405. Males had a median income of $37,288 versus $26,182 for females. The [[per capita income]] for the city was $31,029. About 10.8% of families and 16.9% of the population were below the [[poverty line]], including 29.8% of those under age 18 and 9.0% of those age 65 or over.