Kittitas County Population

1890–2026

49,499

2026 projection

5.7% since 2020 (increase)

010K20K30K40K50K1900192019401960198020002020

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 Kittitas County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202649,499+6961.43%
202548,803+6961.45%
202448,107+3420.72%
202347,765+4430.94%
202247,322+1,6693.66%
202145,653-1,1702.50%
202046,823-1,0332.16%
201947,856+5151.09%
201847,341+1,1772.55%
201746,164+1,2422.76%

Showing 10 of 28 years.

Kittitas County Demographics

35.8median age

Median age

Female36 yrs
Male35.7 yrs

Adults

39,300
8,040 seniors (65+) · 20% of adults31,260 other adults

Sex

Female 49.8% · 23,500Male 50.2% · 23,672

Population by age

MaleFemale85+ years, male: 27985+ years, female: 32780–84 years, male: 46580–84 years, female: 54975–79 years, male: 73675–79 years, female: 72670–74 years, male: 1,04070–74 years, female: 1,26865–69 years, male: 1,41265–69 years, female: 1,23860–64 years, male: 1,74460–64 years, female: 1,73755–59 years, male: 1,11455–59 years, female: 1,38950–54 years, male: 1,25450–54 years, female: 1,34145–49 years, male: 1,37545–49 years, female: 1,08940–44 years, male: 1,30440–44 years, female: 1,00535–39 years, male: 1,33635–39 years, female: 1,33430–34 years, male: 1,50130–34 years, female: 1,28825–29 years, male: 1,69525–29 years, female: 1,31120–24 years, male: 3,18520–24 years, female: 3,60315–19 years, male: 2,00315–19 years, female: 2,01010–14 years, male: 1,11910–14 years, female: 1,1665–9 years, male: 1,2065–9 years, female: 1,0680–4 years, male: 9040–4 years, female: 1,05185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K3K3K

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 472 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

Kittitas County Income

$73,804median household income

Median household income

$73,804

Half of households earn more, half earn less

Median earnings

$54,670

Typical yearly pay for a worker 25 or older.

Poverty rate

14.4%

About 1 in 7 residents

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

Kittitas County Marital Status

49% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married49%50%48%
Never married36%39%34%
Divorced10%8%11%
Widowed4%2%6%
Separated1%<1%1%

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

Sources

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

Population

American Community Survey, 2024 5-year