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Last reviewed: June 04, 2026 · Methodology: all Cowlitz County record-source URLs verified against the official local and Washington state publishers on the review date. 5 primary .gov / official sources cited below.

Cowlitz County — Key Numbers (2026)

Population, demographics, and county-seat data for Cowlitz County, Washington — verified against U.S. Census 2024 estimates.
113,982
Population
Census estimate
43,167
Households
Census estimate
$70,912
Median income
Annual household
$332,200
Median home value
Census ACS
Kelso
County seat
In Washington
Cowlitz County Records Availability Map
Criminal records
2 sources
Court records
2 sources
Wants & warrants
see state portal
Property records
see state portal
Vital records
1 source
Voter records
see state portal
Professional licenses
see state portal
Recorded documents
see state portal
Count of verified official sources per record type. Multiple sources   One source   Use state portal

Cowlitz County Records at a Glance

Record typeCowlitz County verified sources
Court recordsWashington Courts - Search Case Records
Preface The Frontier Justice Records Project is an ...
Criminal recordsCowlitz County, WA - Official Website - Most Wanted
Cowlitz County Jail Roster - apps
Wants & warrantsNo verified source — see Cowlitz County state portal below
Property recordsNo verified source — see Cowlitz County state portal below
Vital recordsWashington State Archives, Digital Archives - Title Info: Co…
Voter recordsNo verified source — see Cowlitz County state portal below
Professional licensesNo verified source — see Cowlitz County state portal below
Recorded documentsNo verified source — see Cowlitz County state portal below
Cowlitz County — Verified Record Sources by Type (2026)
Court records2Criminal records2Wants & warrants0Property records0Vital records1Voter records0Licenses0Recorded docs0
Count of officially verified .gov / .us record sources cataloged for Cowlitz County. Data verified June 04, 2026.

What Changed in 2026 — Cowlitz County Records

2026
Cowlitz County official government portal active
The official Cowlitz County government website at www.co.cowlitz.wa.us continues to serve as the canonical local source.
2026
Cowlitz County court records portal verified
State court system links for Cowlitz County verified against the Washington judiciary portal in 2026.
2026
Cowlitz County criminal records access
State criminal records repository for Cowlitz County (statewide system, not county-specific) confirmed active in 2026.
2026
FBI Identity History Summary (federal complement)
For records that may exist outside Washington, the FBI Identity History Summary at fbi.gov complements all county-level state records.

The 4-Step Cowlitz County Records Pathway

1
Step 1 — Start at the Cowlitz County clerk/courthouse
For most local records (court cases, property deeds, marriage licenses), the Cowlitz County clerk's office is the first stop.
2
Step 2 — Use the Washington statewide systems
Criminal background, court case search, voter registration, and professional licensing are all run at the Washington state level — not by the county.
3
Step 3 — Federal sources for federal records
Federal court cases (PACER), federal tax liens (IRS), military records (NPRC), and immigration data (ICE) are all federal — not held by the county.
4
Step 4 — Cross-check before relying on data
Most county portals lag 24-48 hours behind the courthouse. For time-sensitive verification, call the clerk directly.

Five Things People Get Wrong About Cowlitz County Records

❌ Myth: "Cowlitz County maintains all criminal records."
✓ Truth: False. Criminal records for Cowlitz County are held by the Washington state repository, NOT the county. The county sheriff has only the local arrest log.
❌ Myth: "Records sealed in Cowlitz County are gone everywhere."
✓ Truth: False. Sealing removes records from public search but they still exist at the courthouse and may appear in FBI records (Identity History Summary).
❌ Myth: "Free 'instant background' sites have Cowlitz County data."
✓ Truth: False. Only the official Washington state repository has verified, current Cowlitz County data. Free sites often have stale data.
❌ Myth: "The Cowlitz County assessor's value is what I'll sell my home for."
✓ Truth: False. The Cowlitz County assessor's value is for property tax purposes only — usually below market value.
❌ Myth: "All county records older than 50 years are public."
✓ Truth: Partially false. Public-records rules vary by record type AND state. Court records and deeds are usually older-public; vital records remain restricted longer (often 75-125 years).

Primary Sources (All Verified)

Related — Cowlitz County & Washington Records

For records not specific to Cowlitz County, use Washington's statewide system or the national hub.
📍 Washington statewide record systems:
🇺🇸 National hubs:
Related Public Records
Other counties in Washington: Clark · Columbia · Douglas · Ferry · Franklin

About Cowlitz County, Washington

Cowlitz County is located in southwest Washington. The county seat is Kelso (official site: http://www.co.cowlitz.wa.us ).

  • Population: 113,982
  • Households: 43,167
  • Median household income: $70,912
  • Median home value: $332,200
  • Below poverty line: 12.1%
  • Land area: 1,141.2 sq mi
  • Population density: 99.9 people / sq mi
  • Public libraries indexed: 4
  • NCES schools indexed: 44
Cowlitz Property Info | Homepage
Official Free
NOTICE: If there is specific data you are unable to find or you need assistance navigating the new site, we encourage you to contact us at assessor@co.cowlitz.wa.us or by calling 360-577-3010.
CT
Washington Courts - Search Case Records
Official Free
Search for a case Search for a person Find My Court Date Use this search to find out when you need to appear in district or municipal court. The search tool returns a case summary and, where applicable, calendar information and a list of case activities (docket) · Case Search Options Use this ...
CT
Preface The Frontier Justice Records Project is an ...
Official Free
inventory, index, and preserve the court records of Washington Territory . Early in 1984, NHPRC approved a two-year grant to the State Archives and the Frontier Justice Records · Protection Project began. The timing of the grant proposal coincided with planning for ...
CT
Registered Sex Offenders | Cowlitz County, WA - Official Website
Official Free
Questions about sex offenders in unincorporated Cowlitz County should be directed to the Cowlitz County Sheriff's Office. For information regarding public disclosure, please see RCW 4.24.550. If you want to know the laws and changes to the laws regarding Registered Sex Offenders, please go to our Important Changes in the Law page. For basic registration laws in the State of Washington, see RCW 9A.44.130.
CR
Cowlitz County, WA - Official Website - Most Wanted
Official Free
With myConnection, the profile that you want to complete in your time on this website. Use myConnection to gather the information that you most care about from across this website into one central location, giving you greater control over how you connect with your community. View your community’s facilities and features online with the new Facilities Module. View the new Cowlitz County Parks and
CR
Cowlitz County Jail Roster - apps
Official Free
Cowlitz County Washington - Inmate Roster, Bookings and Releases.
CR
WATCH Overview - Washington State Patrol
Official Free
The Washington State Patrol Identification and Criminal History Section (WASIS) has established this web site as the official Internet source providing criminal history conviction records for the state of Washington only .
VR
Washington State Archives, Digital Archives - Title Info: Cowlitz County Birth Records, 1891-1940
Official Free
Washington State Archives, Digital Archives is the first Digital Archives in the nation to Preserve the electronic Records of both State and Local Government.
VR
About the Western States Marriages Records Index
Official Free
Most of the pre-1900 marriages are included in the index for Arizona, Idaho, and Nevada. Many counties for those same states have been extracted into the 1930s and some, much later. A significant number of marriages from selected counties in California, western Colorado, Montana, Oregon, Utah, eastern Washington, and Wyoming are also included.
VR
PRIMARY 2025 Candidate List - VoteWA.gov
Official Free
Select the Primary election to see all candidates who filed (select a county to see PCOs) · General Election candidates will display after the Primary is certified
LC
Accela Permit Center | Cowlitz County, WA - Official Website
Official Free
For questions, please email us at: permitinfo@cowlitzwa.gov or call 360-577-3052 . All building projects that include plumbing shall be connected to approved water and sewer. As of May 1, 2021, evidence of approved water availability and sewer from the Environmental Health Unit (EHU) of the ...
RD
VOTERS’ PAMPHLET Washington State Elections & Cowlitz County 2020 2023
Official Free
Washington State Elections · & Cowlitz County · 2020 · 2023 · General Election · November 7 · Ballots mailed out by October 20 · 1(800) 448-4881 | sos.wa.gov/elections · Official Publication · 2 · A message from Secretary of State Steve Hobbs · @secstatewa ·
BZ
Cowlitz County, WA - Official Website | Official Website
Official Free
Create a Website Account - Manage notification subscriptions, save form progress and more. Rich in history, industry, natural beauty, and home of the Monticello Convention of 1852, Cowlitz County is where Washington Territory was born. With a balanced blend of rural and urban environments, most residents of Cowlitz County live about an hour from Mt.
BZ
Understanding the Inspection Report Form | Cowlitz County, WA - Official Website
Official Free
At each food establishment, Cowlitz County Health & Human Services’ (CCHHS) inspectors observe food handling practices, check food temperatures, discuss food safety with operators, verify sources of food, inspect storage areas, assess sanitation, check equipment, and check water temperatures.
OT
Missing Persons Information
Official Free
In the mid-2000’s, the Washington State Legislature tasked the Washington Association of Sheriffs and Police Chiefs (WASPC) to create and maintain a statewide website, which shall be available to the public. The website shall post relevant information concerning persons reported missing in ...
OT
Title 18 LAND USE AND DEVELOPMENT
Official Free
18.52 Open Space Rating Ordinance · 18.56 Campground Binding Site Plan Code · 18.60 Adult Entertainment Enterprises · 18.64 Commercial and Industrial Binding Site Plan Code (BSP) 18.68 Cottage Housing · 18.70 Wireless Communications Facilities · 18.76 Recreational Marijuana · 18.80 Historic ...
PR
Washington State Archives, Digital Archives - Title Info: 1910, U.S. Federal Census, Cowlitz County, U.S. Census Bureau
Official Free
Washington State Archives, Digital Archives is the first Digital Archives in the nation to Preserve the electronic Records of both State and Local Government.

Frequently Asked Questions

How do I look up court cases in Cowlitz County?
Cowlitz County court cases are searchable through the Washington Courts - Search Case Records portal: https://dw.courts.wa.gov/. Washington also operates a state-level case lookup through the WA Courts system. For federal matters, see PACER.
What's the difference between sealing and expunging a record in Washington?
In Washington, a sealed record is hidden from public view but still exists and remains visible to law enforcement, licensing boards, and some employers. An expunged record is treated by Washington law as if it never happened — though FBI and federal records may persist regardless of state action. The relief process runs through the sentencing court.
Are Washington marriage records public?
Marriage records in Washington are generally public — anyone can verify that a marriage occurred and request a non-certified copy. Certified copies (needed for legal purposes like name changes or immigration) may be restricted to the spouses, immediate family, or those with a court order.
Are Washington criminal records public?
Mostly yes. Washington's public-records law makes adult arrests, court filings, and conviction histories accessible to anyone unless a specific statutory exemption applies. Juvenile cases and sealed records are generally excluded by statute.