Index change and building permits for the year, with every county.
In 1998 the FHFA house price index for Oklahoma changed +4.1%, against +3.7% for the United States and +3.1% in 1997.
14,389 housing units were authorised by building permits in the state that year (9,664 single-family), +28.5% on 1997; the national total was 1,612,260.
+4.1%Oklahoma index, 1997–1998US +3.7%
14,389housing units permitted in 19989,664 single-family
40 of 42counties with a rising indexmedian county +3.1%
Ranked by the county index change from 1997 to 1998 (FHFA annual county index). Permits are units authorised in 1998; per 1,000 uses the vintage 2025 population.
Housing units authorised in Oklahoma by yearsingle-family2+ unit buildings
Source: Federal Housing Finance Agency annual state and county house price indexes (updated March 31, 2026); Census Bureau Building Permits Survey annual state and county files. Public domain. Methodology.