Eastern Oklahoma — humid, wooded, and carrying the state’s heaviest subterranean termite and moisture pressure. County seat is Bartlesville.

Washington County housing profile

Housing units	19,537
Built before 1980	69%
Built before 1940	10%
Built since 2000	14%
Utility gas heat	70%
Electric heat	26%
Bottled or tank propane	2.5%

Source: U.S. Census American Community Survey, tables B25034 and B25040, aggregated from place-level data for the 6 municipalities we hold data for in this county.

What that means for roofs and exteriors

Most roofs here are on their third or fourth covering. Decking condition matters more than shingle grade, and on the oldest stock the deck is plank rather than plywood — which needs overlaying with sheathing and belongs in the quote rather than appearing as a change order once the tear-off starts.

Storm exposure

Oklahoma ranks second nationally for hail behind Texas. Across the three years of NOAA Storm Events data behind our hail tool there were 1,632 recorded Oklahoma hail events. The largest stone in that record was 4.50 inches, in Ellis County on 18 May 2025, and the worst single day was 19 May 2025 with 107 reports statewide.

Towns and communities in this county

Bartlesville, Dewey, Ochelata, Ramona, Copan, Vera.

---

Written by Jaylan Jones. Sooner Exterior Home Services earns a referral fee when a call connects to a contractor. See our business-model disclosure.