Lake Oswego Population

1880–2026

39,495

2026 projection

3.4% since 2020 (decrease)

010K20K30K40K50K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual 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 Lake Oswego. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202639,495-2270.57%
202539,722-2470.62%
202439,969-1140.28%
202340,083-1240.31%
202240,207-4091.01%
202140,616-2600.64%
202040,876+1,0792.71%
201939,797+2790.71%
201839,518+2170.55%
201739,301+5831.51%

Showing 10 of 29 years.

Lake Oswego Demographics

46.7median age

Median age

Female49.7 yrs
Male43.8 yrs

Adults

31,432
9,501 seniors · 30%21,931 other adults

Sex

Female 49.5% · 19,980Male 50.5% · 20,401

Population by age

MaleFemale85+ years, male: 36485+ years, female: 79280–84 years, male: 44880–84 years, female: 54475–79 years, male: 88575–79 years, female: 1,04270–74 years, male: 1,27070–74 years, female: 1,38765–69 years, male: 1,25465–69 years, female: 1,51560–64 years, male: 1,39860–64 years, female: 1,54155–59 years, male: 1,41855–59 years, female: 1,33150–54 years, male: 1,46650–54 years, female: 1,73345–49 years, male: 1,34345–49 years, female: 1,50940–44 years, male: 1,62240–44 years, female: 1,23735–39 years, male: 98135–39 years, female: 1,56730–34 years, male: 1,00930–34 years, female: 74625–29 years, male: 70025–29 years, female: 81320–24 years, male: 64920–24 years, female: 40815–19 years, male: 1,34015–19 years, female: 79210–14 years, male: 1,71710–14 years, female: 1,3905–9 years, male: 1,2745–9 years, female: 8720–4 years, male: 1,2630–4 years, female: 76185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

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 404 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

Lake Oswego Income

$141,549median household income

Median household income

$141,549

Half of households earn more, half earn less

Median earnings

$84,859

Typical yearly pay for a worker 25 or older.

Poverty rate

3.4%

About 1 in 29 residents

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

Lake Oswego Marital Status

62% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married62%65%60%
Never married22%26%18%
Divorced10%7%14%
Widowed5%2%8%
Separated<1%1%<1%

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

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year