Columbia County GIS Maps
Columbia County, Oregon, has 52,589 residents across 27,078 parcels and covers 658.1 square miles. The population grew 6.6% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Columbia County is 41009.
St. Helens is the county's largest population center. Columbia County also includes 8 zip codes, 5 public school districts and 19 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Columbia County Trends
- Population
- 52,589▴
- Median Home Value
- $390,600▴
- K-12 Enrollment
- 7,144▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Columbia County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Columbia County Parcels
Columbia County has 27,078 mapped parcels covering 414,091 acres. The median lot size is 3.76 acres. 4,576 parcels are 10 acres or larger. The records carry 19,803 distinct owner names. About 10% of parcels list an owner mailing address outside Oregon. Owner names, mailing addresses and lot sizes are on nearly every parcel. Site addresses reach 75.1%. Browse the interactive Columbia County Parcel viewer here.
Columbia County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 27,078 | 100% |
| Owner name | 27,077 | 99.9% |
| Owner mailing address | 27,034 | 99.8% |
| Site address | 20,340 | 75.1% |
| Land use code | 27,077 | 99.9% |
| Land use description | 0 | 0% |
| Assessed value | 0 | 0% |
| Land value | 0 | 0% |
| Improvement value | 0 | 0% |
| Acreage | 27,078 | 100% |
| Parcel boundary | 27,078 | 100% |
| Download all Columbia County parcels. | ||
Field coverage measured across all Columbia County parcel records.
Columbia County Population
Columbia County had 52,589 residents in 2020. That was 6.6% higher than in 2010. Columbia County added 9,029 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 80 people per square mile. Some of the county's most populated postal areas include Saint Helens, Scappoose and Rainier.
Population Trend in Columbia County OR
Columbia County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Columbia County Zip Codes
Columbia County has 8 zip codes. Some of the county's most populated zip codes include Saint Helens (97051), Scappoose (97056) and Rainier (97048). Saint Helens is the largest zip by population, with about 17,012 residents or 32% of the county total. Together, the three largest zips account for about 70% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Columbia County OR
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 97051 | Saint Helens | 17,012 | ▴ 6.6% |
| 97056 | Scappoose | 12,926 | ▴ 12.4% |
| 97048 | Rainier | 6,965 | ▴ 4.1% |
| 97016 | Clatskanie | 6,162 | ▴ 1.3% |
| 97064 | Vernonia | 3,802 | ▴ 9.8% |
| Download all zip code data | |||
Columbia County Zip Code populations and trends per most recent census data.
Columbia County Demographics
Columbia County has a median age of 43.2, which makes the county a little older than Oregon overall. About 20.5% of residents are under 18, while 19.6% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 31.3% of the population, which points to a solid working-age base. About 19.2% of adults have a bachelor's degree or higher, above the statewide figure of 36.2%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Columbia County OR
Median Age
43.2
Under 18
20.5%
Age 65+
19.6%
Bachelor's+
19.2%
Columbia County School Districts
Columbia County is served by 5 public school districts with 7,144 students enrolled in 2024. The largest districts on the county map are St. Helens 502, Scappoose 1J and Rainier 13. Those three districts account for about 83% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Columbia County OR
| District | Enrollment | Share | Trend |
|---|---|---|---|
| St. Helens School District 502 | 2,856 | 40% | ▴ 3.3% |
| Scappoose School District 1J | 2,251 | 31.5% | ▴ 1.1% |
| Rainier School District 13 | 789 | 11% | — 0% |
| Clatskanie School District 6J | 694 | 9.7% | ▴ 5% |
| Vernonia School District 47J | 554 | 7.8% | ▾ -1.6% |
| Download all school district data | |||
Columbia County school district enrollment and trends per most recent NCES reporting data.
Columbia County Housing & Real Estate
Columbia County has a median home value of $390,600 and a median gross rent of $1,221. About 76% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Oregon median, while rents come in below the state average. In March 2026, the median listing price was $515,975 and homes spent about 63 days on the market.
Columbia County Housing Mix
Columbia County housing mix: owner, renter and vacant units.
Columbia County Housing Trends
Columbia County median home value and rent trend (last 5 years).
Businesses in Columbia County, OR
Columbia County has 1,861 business listings across 471 categories. The largest categories in Columbia County business listings are Churches & Religious Organizations (53, 2.8%), Parks & Recreation (45, 2.4%), and Farm (44, 2.4%). The full Columbia County business listings dataset includes names, categories, addresses and contact details where available. Columbia County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Columbia County, OR
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 53 | 2.8% |
| Parks & Recreation | 45 | 2.4% |
| Farm | 44 | 2.4% |
| Real Estate Agents | 34 | 1.8% |
| Community & Nonprofits | 29 | 1.6% |
| Contractors | 28 | 1.5% |
| Gas Stations | 28 | 1.5% |
| Auto Repair | 28 | 1.5% |
| Coffee Shops | 23 | 1.2% |
| Landmark And Historical Building | 22 | 1.2% |
Columbia County Business Listings
| Business | Category | City |
|---|---|---|
| Deer Island Manor | Accommodation | Deer Island |
| Above All Accounting | Accountant | Scappoose |
| PPTPOSTURE & Healthy Weight | Active Life | Saint Helens |
| St. Helens Acupuncture | Acupuncture | St Helens |
| Sticky Signs & Graphics | Advertising Agency | Saint Helens |
| Priester Bee Supply | Agricultural Service | Deer Island |
| Sport International | Aircraft Manufacturer | Scappoose |
| Scappoose Airport | Airport | Scappoose |
| Vernonia High School | American Football Field | Vernonia |
| Ichabod's Restaurant | American Restaurants | Scappoose |
| Download Columbia County business listings | ||
Columbia County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Columbia County Basemaps
Columbia County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Columbia County Data Package
This page shows a preview of what's included in the Columbia County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Columbia County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.