Arlington Heights population
Arlington Heights, Illinois had an estimated 76,216 residents on July 1, 2025, the 522nd-largest city in the US. That is up 1.5% since the 2010 Census and down 0.5% since 2000.
- Population, July 2025
- 76,216-1.9% since April 2020
- People per sq mile
- 4,58816.6 sq mi of land
- Median age
- 42.620% are 65 or older
- Households with kids
- 28.6%with anyone under 18
Population by year, 2000 to 2025
| Year | Population | Change | Basis |
|---|---|---|---|
| 2025 | 76,216 | +576 | Estimate, July 1 |
| 2024 | 75,640 | +541 | Estimate, July 1 |
| 2023 | 75,099 | -132 | Estimate, July 1 |
| 2022 | 75,231 | -861 | Estimate, July 1 |
| 2021 | 76,092 | -1,584 | Estimate, July 1 |
| 2020 | 77,676 | +2,988 | April 2020 estimates base |
| 2019 | 74,688 | -412 | Estimate, July 1 |
| 2018 | 75,100 | -355 | Estimate, July 1 |
| 2017 | 75,455 | -329 | Estimate, July 1 |
| 2016 | 75,784 | -192 | Estimate, July 1 |
| 2015 | 75,976 | -160 | Estimate, July 1 |
| 2014 | 76,136 | +25 | Estimate, July 1 |
| 2013 | 76,111 | +199 | Estimate, July 1 |
| 2012 | 75,912 | +385 | Estimate, July 1 |
| 2011 | 75,527 | +426 | Estimate, July 1 |
| 2010 | 75,101 | +279 | 2010 Census (April 1) |
| 2009 | 74,822 | +409 | Estimate, July 1 |
| 2008 | 74,413 | +230 | Estimate, July 1 |
| 2007 | 74,183 | -55 | Estimate, July 1 |
| 2006 | 74,238 | -503 | Estimate, July 1 |
| 2005 | 74,741 | -529 | Estimate, July 1 |
| 2004 | 75,270 | -513 | Estimate, July 1 |
| 2003 | 75,783 | -393 | Estimate, July 1 |
| 2002 | 76,176 | -352 | Estimate, July 1 |
| 2001 | 76,528 | -96 | Estimate, July 1 |
| 2000 | 76,624 | April 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 Arlington Heights in 2025?
The Census Bureau estimates Arlington Heights had 76,216 residents on July 1, 2025, making it the 522nd-largest city in the US.
Is Arlington Heights growing?
Yes. Arlington Heights has grown 1.5% since the 2010 Census (75,101 people), and shrunk 1.9% since 2020.
What was the population of Arlington Heights in 2000?
About 76,624 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 75,101.
How dense is Arlington Heights?
Arlington Heights has about 4,588 people per square mile of land (16.6 square miles).
More about Arlington Heights
See cost of living, jobs and commutes in Arlington Heights, Arlington Heights weather by month, or every Arlington Heights ZIP code. For the biggest cities in the country, see the largest US cities.