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Elgin population

Elgin, Illinois had an estimated 115,476 residents on July 1, 2025, the 278th-largest city in the US. That is up 6.7% since the 2010 Census and up 22% since 2000.

ElginIllinoisPop. 115,476
Population, July 2025
115,476+0.6% since April 2020
People per sq mile
3,02538.2 sq mi of land
Median age
36.713.5% are 65 or older
Households with kids
36.2%with anyone under 18

Population by year, 2000 to 2025

80k89k98k107k115k2000: 94,63820002001: 97,3552002: 99,58820022003: 101,2632004: 102,80220042005: 103,5742006: 104,58320062007: 105,8592008: 106,92020082009: 107,7462010: 108,18820102011: 109,2182012: 109,69920122013: 110,1262014: 111,02720142015: 111,9492016: 112,22320162017: 112,0562018: 111,48720182019: 110,7852020: 114,81920202021: 114,0602022: 113,31020222023: 113,9882024: 114,98820242025: 115,4762025
Darker bars are the April 2000, 2010 and 2020 benchmarks; the rest are July 1 estimates. Source: US Census Bureau population estimates (intercensal 2000-2010, Vintage 2020 and Vintage 2025).
YearPopulationChangeBasis
2025115,476+488Estimate, July 1
2024114,988+1,000Estimate, July 1
2023113,988+678Estimate, July 1
2022113,310-750Estimate, July 1
2021114,060-759Estimate, July 1
2020114,819+4,034April 2020 estimates base
2019110,785-702Estimate, July 1
2018111,487-569Estimate, July 1
2017112,056-167Estimate, July 1
2016112,223+274Estimate, July 1
2015111,949+922Estimate, July 1
2014111,027+901Estimate, July 1
2013110,126+427Estimate, July 1
2012109,699+481Estimate, July 1
2011109,218+1,030Estimate, July 1
2010108,188+4422010 Census (April 1)
2009107,746+826Estimate, July 1
2008106,920+1,061Estimate, July 1
2007105,859+1,276Estimate, July 1
2006104,583+1,009Estimate, July 1
2005103,574+772Estimate, July 1
2004102,802+1,539Estimate, July 1
2003101,263+1,675Estimate, July 1
200299,588+2,233Estimate, July 1
200197,355+2,717Estimate, July 1
200094,638April 2000 estimates base

Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.

Frequently asked questions

What is the population of Elgin in 2025?

The Census Bureau estimates Elgin had 115,476 residents on July 1, 2025, making it the 278th-largest city in the US.

Is Elgin growing?

Yes. Elgin has grown 6.7% since the 2010 Census (108,188 people), and grown 0.6% since 2020.

What was the population of Elgin in 2000?

About 94,638 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 108,188.

How dense is Elgin?

Elgin has about 3,025 people per square mile of land (38.2 square miles).

More about Elgin

See cost of living, jobs and commutes in Elgin, Elgin weather by month, or every Elgin ZIP code. For the biggest cities in the country, see the largest US cities.