The county and municipal populations shown for 1990 are,
with a few exceptions, the 1990 federal census Summary Tape File 1 counts.
Some 1990 counts may differ from the federal counts.
* State Certified Special Census. A population and housing
count that meets all special census certification requirements.
# Informal Census. A population and housing count that is considered
accurate but does not meet all special census certification requirements.
‘+ Informal Count. A population count that is considered accurate but
does not meet all special census certification requirements.
$ Indicates a correction to the federal 1990 census count and/or a revised
state estimate.
@ Incorporation Base. First Office of Financial Management April 1
estimate after incorporation.
Federal Way and SeaTac incorporated in February 1990.
Burien incorporated February 1993.
Woodinville incorporated March 1993. Newcastle incorporated as Newport
Hills in September 1994.
Shoreline and University Place incorporated in August 1995.
Covington and Maple Valley incorporated in August 1997. Kenmore
incorporated in August 1998.
City of Pacific annexed housing units and population in Pierce County in
July 1995.