Rock Creek, Washington County, OR demographics:
population, income, and more

Total population
5,155
0.6% year-over-year change
Median household income
$161,570/yr
1.1% year-over-year change
Housing units
1,978
3.1% year-over-year change

Rock Creek population

How many people live in Rock Creek

Rock Creek is home to 5,155 residents, according to the most recent Census data. Gender-wise, 50.2% of Rock Creek locals are male, and 49.8% are female.

Total population
5,155
0.6% year-over-year change
Gender ratio
Male
50.2%
2,586
Female
49.8%
2,569
Value Percent YoY change
Male 2,586 50.2% -0.3%
Female 2,569 49.8% 1.5%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Rock Creek is 38, with the population distributed as follows: about 21% are children under 15, then 11.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 28.4% of the population, while another 27.2% fall into the 45 to 64 bracket. Finally, around 11.7% are 65 or older.

Median age
38.4
Age breakdown
Under 15
21%
15 to 24
11.7%
25 to 44
28.4%
45 to 64
27.2%
Over 65
11.7%
Value Percent YoY change
Under 15 1,081 21% -4.2%
15 to 24 602 11.7% 3.1%
25 to 44 1,466 28.4% 0.2%
45 to 64 1,401 27.2% 3.8%
Over 65 605 11.7% 1.3%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Rock Creek, 72% of the population are US-born citizens, while 14.2% have gained naturalized citizenship. At the same time, 13.8% of residents are non-citizens. As for race, 58.1% of locals are Caucasian, 1.3% are African American and 27.6% have Asian roots. Another 0.4% are Indigenous American, 0.1% are Pacific Islanders, while 2.5% identify as another race. There’s also a share of 10.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
72%
Non-U.S.-born citizens
14.2%
Non-citizens
13.8%
Value Percent YoY change
U.S.-born citizens 3,711 72% 0.4%
Non-U.S.-born citizens 734 14.2% 6.5%
Non-citizens 711 13.8% -3.7%
Racial breakdown
White
58.1%
Black or African American
1.3%
American Indian and Alaska Native
0.4%
Asian
27.6%
Native Hawaiian and other Pacific Islander
0.1%
Two or more races
10.1%
Other
2.5%
Value Percent
White 2,994 58.1%
Black or African American 65 1.3%
American Indian and Alaska Native 18 0.4%
Asian 1,424 27.6%
Native Hawaiian and other Pacific Islander 5 0.1%
Two or more races 519 10.1%
Other 131 2.5%

Households in Rock Creek

A peek inside Rock Creek households

Rock Creek has 1,926 households, with an average of 3 members in each. Of these, 74.4% are families, while the remaining 25.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
1,926
3.3% year-over-year change
Average people per household
3
Non-family households
494
Family households
1,432
Value Percent YoY change
Non-family households 494 25.6% 9.3%
Family households 1,432 74.4% 1.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Rock Creek

The housing landscape of Rock Creek

Rock Creek's housing consists of 1,978 units, with 66.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 9.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.2% of the housing landscape.

Housing units
1,978
3.1% year-over-year change
Housing types
Value Percent
1 unit, detached 1,310 66.2%
1 unit, attached 194 9.8%
2 units 17 0.9%
3 or 4 units 82 4.1%
5 to 9 units 86 4.4%
10 to 19 units 124 6.3%
20 to 49 units 58 2.9%
50 or more units 100 5%
Mobile home 5 0.2%
Boat, RV, van, etc. 3 0.2%
Homes built since 2020
72
105.7% year-over-year change

The age of buildings in Rock Creek

In Rock Creek, the median construction year is 1998. About 0.9% of homes were built before the 1940s, with another 0.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 21.7% of homes were added from 2000 to 2009, 19.3% between 2010 and 2019, and 3.6% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 18 0.9% 12.5%
Built between 1940 and 1949 12 0.6% 0.0%
Built between 1950 and 1959 46 2.3% 0.0%
Built between 1960 and 1969 132 6.7% -7.7%
Built between 1970 and 1979 235 11.9% 0.4%
Built between 1980 and 1989 152 7.7% -3.2%
Built between 1990 and 1999 500 25.3% 1.0%
Built between 2000 and 2009 430 21.7% 2.1%
Built between 2010 and 2019 382 19.3% 6.4%
Built in 2020 or later 72 3.6% 105.7%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Rock Creek occupancy rates

Out of the 1,926 occupied housing units in Rock Creek, 69.8% are owner-occupied, while 30.2% are lived in by tenants. Meanwhile, 2.6% of all homes on the local market sit vacant.

Occupied housing units
1,926
3.3% year-over-year change
Occupancy breakdown
Renter occupied
581
Owner occupied
1,345
Value Percent YoY
change
Renter occupied 581 30.2% 4.3%
Owner occupied 1,345 69.8% 2.8%
Unoccupied housing units
2.6%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Rock Creek housing costs

Housing costs in Rock Creek come to a median of $2,273 per month, while tenants specifically pay a median gross rent of $2,024.

Median housing costs per month
$2,273/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Rock Creek
$2,024/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Rock Creek

Rock Creek education at a glance

About 13.8% of the population in Rock Creek went to high school, while 14.8% pursued college studies. Another 5.1% earned an associate degree and 34.2% hold a bachelor’s. Meanwhile, 31.1% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 36 1% -21.7%
High school diploma 524 13.8% 7.2%
College diploma 565 14.8% -2.6%
Associate degree 195 5.1% 0.0%
Bachelor's degree 1,301 34.2% 3.7%
Graduate degree 1,185 31.1% 2.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Rock Creek

How much people earn in Rock Creek

The average annual household income in Rock Creek was $193,119 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -0.1% change from the previous year. At the same time, the median income stood at $161,570, reflecting a +1.1% shift over the same period.

Average household income in Rock Creek
$193,119/year
-0.1% year-over-year change
Median household income in Rock Creek
$161,570/year
1.1% year-over-year change

Rock Creek income by age

In Rock Creek, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $169,859. Those with someone between 45 and 64 in charge, often well established professionally, earn $192,976 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $76,685, while those led by someone over 65, many of whom may be retired, have about $82,765 in earnings. Overall, 94.8% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $76,685 29.2%
25 - 44 $169,859 0.6%
45 - 64 $192,976 -0.1%
Over 65 $82,765 -1.0%
Above poverty level
4,804
Below poverty level
262
Value Percent YoY
change
Above poverty level 4,804 94.8% 0.3%
Below poverty level 262 5.2% 6.1%

Employment in Rock Creek

Workforce and job types in Rock Creek

92% of the working population are employed in professional or administrative positions, while 8% are in hands-on or service-based jobs. Also, 9.9% run their own businesses, 71.6% are employed by private companies, and 10.1% work in the public sector.

Workforce demographics

White collar
2,426
Blue collar
210
Value Percent YoY change
White collar 2,426 92% 2.3%
Blue collar 210 8% -1.9%
Employer type
Self employees
9.9%
Private companies
71.6%
Governmental workers
10.1%
Not for profit companies
8.4%
Value Percent YoY change
Self employees 261 9.9% 9.7%
Private companies 1,887 71.6% 0.5%
Governmental workers 266 10.1% 3.9%
Not for profit companies 222 8.4% 3.7%

Transportation in Rock Creek

How people get around in Rock Creek

In Rock Creek, the average commute time is 2 minutes. Commuting methods vary: 92.8% of residents travel by personal vehicle and 3.2% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
2 min
0.0% year-over-year change
Means of transportation
Value Percent YoY change
Car 1,524 92.8% -7.0%
Bus or trolleybus 45 2.7% 36.4%
Railroad 1 0.1% -50.0%
Ferryboat 1 0.1% -66.7%
Bicycle 19 1.2% 58.3%
Walk 52 3.2% 23.8%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

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FAQs about Rock Creek demographics 

What is the total population of Rock Creek?

Rock Creek has a total population of 5,155 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.6% compared to a year ago.

What is the gender ratio in Rock Creek?

The gender ratio in Rock Creek is as follows:
  • 50.2% males (2,586 residents)
  • 49.8% females (2,569 residents)

What is the median age in Rock Creek?

The median age in Rock Creek is 38.4.

What is the age distribution of the population in Rock Creek?

The age distribution in Rock Creek is as follows:
  • Under 15: 21% (1,081 residents)
  • Ages 15-24: 11.7% (602 residents)
  • Ages 25-44: 28.4% (1,466 residents)
  • Ages 45-64: 27.2% (1,401 residents)
  • Over 65: 11.7% (605 residents)

What is the racial and ethnic makeup of Rock Creek?

The racial and ethnic makeup of Rock Creek is as follows:
  • White: 58.1% (2,994 residents)
  • Black or African American: 1.3% (65 residents)
  • American Indian and Alaska Native: 0.4% (18 residents)
  • Asian: 27.6% (1,424 residents)
  • Native Hawaiian and Other Pacific Islander: 0.1% (5 residents)
  • Two or More Races: 10.1% (519 residents)
  • Other: 2.5% (131 residents)

What percentage of the population in Rock Creek are U.S.-born citizens?

U.S.-born citizens represent 72% of the population in Rock Creek.

How many housing units are there in Rock Creek?

There are 1,978 housing units in Rock Creek, reflecting a +3.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Rock Creek and what is the average household size?

Rock Creek has a total of 1,926 households, with an average of 3 people in each.

What is the median household income in Rock Creek?

Rock Creek has a median household income of $161,570, representing a +1.1% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Rock Creek?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 92% (2,426 residents)
  • Blue-collar workers: 8% (210 residents)

Places of employment:
  • Self-employed: 9.9% (261 residents)
  • Private companies: 71.6% (1,887 residents)
  • Governmental workers: 10.1% (266 residents)
  • Not-for-profit companies: 8.4% (222 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025