Lockport Population

1870–2026

28,010

2026 projection

7.3% since 2020 (increase)

05K10K15K20K25K30K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Lockport. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202628,010+1880.68%
202527,822+9193.42%
202426,903+2721.02%
202326,631+4961.90%
202226,135-220.08%
202126,157+630.24%
202026,094+2160.83%
201925,878+1860.72%
201825,692+1440.56%
201725,548+1990.79%

Showing 10 of 31 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Lockport is growing faster than Will County, Illinois, and the U.S.

  • Lockport+6.4%
  • United States+3.1%
  • Will County+2.2%
  • Illinois−0.6%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Lockport Demographics

38.5median age

Median age

Female38.3 yrs
Male38.7 yrs

Adults

20,230
3,375 seniors (65+) · 17% of adults16,855 other adults

Sex

Female 50.7% · 13,384Male 49.3% · 13,025

Population by age

MaleFemale85+ years, male: 9085+ years, female: 16380–84 years, male: 16780–84 years, female: 30375–79 years, male: 23475–79 years, female: 32470–74 years, male: 42070–74 years, female: 61465–69 years, male: 54165–69 years, female: 51960–64 years, male: 66460–64 years, female: 69555–59 years, male: 1,05855–59 years, female: 99250–54 years, male: 1,28450–54 years, female: 99045–49 years, male: 90945–49 years, female: 95440–44 years, male: 93540–44 years, female: 86735–39 years, male: 1,06035–39 years, female: 90530–34 years, male: 80930–34 years, female: 1,09525–29 years, male: 64425–29 years, female: 82520–24 years, male: 67020–24 years, female: 69015–19 years, male: 1,13315–19 years, female: 98610–14 years, male: 70110–14 years, female: 8615–9 years, male: 8915–9 years, female: 7490–4 years, male: 8150–4 years, female: 85285+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 264 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Lockport Income

$111,981median household income

Median household income

$111,981

Half of households earn more, half earn less

Median earnings

$68,407

Typical yearly pay for a worker 25 or older.

Poverty rate

6.8%

About 1 in 15 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Lockport Marital Status

55% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married55%56%54%
Never married31%34%28%
Divorced8%8%9%
Widowed5%1%8%
Separated<1%<1%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources