Title: 
Headings:  2020 Population Trends
2020
 
P
opulation
 
T
rends

Forecasting
 
&
 
Research
 
Division
 

Office
 
of
 
Financial
 
Management
 
August
 
2020


 
Part
 
1.
 
State,
 
County
 
and
 
City
 
Populations
 

3
 
 
Summary
 
of
 
Population
 
Trends:
 
Counties
 
and
 
Cities
 
 

7
 
Part
 
2.
 
Data
 
Tables
 

46
 
 
Part
 
3.
 
Supplemental
 
Population
 
Information
 

POPULATION
 
TRENDS
 

Summary
 
of
 
Population
 
Trends:
 
Washington
 
State
 

Summary
 
of
 
Population
 
Trends:
 
Counties
 
and
 
Cities
  

DATA
 
TABLES
 

10-Year
 
Intervals
 

Single
 
Years
 

       
Change
 

Census
 
Numeric
 
Total
 
Change:
 
2000
 
to
 
2010
 
Percentage
 
Natural
 
Rank
 
by
 
Net
  
Percentage
 

Change
 

Births
 

Deaths
 

Increase
 

Migration
  

Census
 
2010
 

Estimate
 
2011
 

Estimate
 
Estimate
 
Estimate
 
2012
 
2013
 
2014
 

Estimate
 
Estimate
 
2015
 
2016
 

Estimate
 
2017
 

Estimate
 
2018
 

Estimate
 
2019
 

Estimate
 
2020
 

Calculation:
 
          
1
 
          
2
 
Total
 
Change:
 
2010
 
to
 
2020
 
Numeric
 
Percentage
 

Change
 

Births
 

Deaths
 

Natural
 
Increase
 

Net
 
Migration
 

Rank
 
by
 
Percentage
 
Change
 

Adams
 

Asotin
 

Benton
 

Chelan
 

Clallam
 

Clark
 

Columbia
 

Cowlitz
 

Douglas
 

Ferry
 

Franklin
 

Garfield
 

Grant
 

Grays
 
Harbor
 

Island
 

Jefferson
 

King
 

Kitsap
 

Kittitas
 

Klickitat
 

Lewis
 

Lincoln
 

Mason
 

Okanogan
 

Pacific
 

Pend
 
Oreille
 

continued
 

Pierce
 

San
 
Juan
 

Skagit
 

Skamania
 

Snohomish
 

Estimate
  
2015
  

County
 
Municipality
 

Adams
 

Asotin
 

Benton
 

Chelan
 

Clallam
 

Clark
 

Columbia
 

Municipality
 

Cowlitz
 

Douglas
 

Ferry
 

Franklin
 

Garfield
 

Grant
 

Grays
 
Harbor
 

Island
 

Jefferson
 

King
 

Kitsap
 

Kittitas
 

Klickitat
 

Lewis
 

Lincoln
 

Mason
 

Okanogan
 

Pacific
 

Pend
 
Oreille
 

Pierce
 

San
 
Juan
 

Skagit
 

Skamania
 

Snohomish
 

Spokane
 

Stevens
 

Thurston
 

Wahkiakum
 

Walla
 
Walla
 

Whatcom
 

Whitman
 

Yakima
 

State
 

County
 
Municipality
 

Adams
 

Asotin
 

Benton
 

Chelan
 

Clallam
 

Clark
 

Columbia
 

Cowlitz
 

Douglas
 

Area
  
       
Housing
 
Units
 
Area
  
       
Housing
 
Units
 

County
 
Municipality
 

Ferry
 

Franklin
 

Garfield
 

Grant
 

Grays
 
Harbor
 

Island
 

Jefferson
 

King
 

Boundary
 
Changes:
 
April
 
2,
 
2010
 
–
 
April
 
1,
 
2020
  

Area
  
       
Housing
 
Units
 

Boundary
 
Changes:
 
April
 
2,
 
2019
 
–
 
April
 
1,
 
2020
 

Area
  
       
Housing
 
Units
 


Content: This
 
marks
 
the
 
second
 
time
 
this
 
decade
 
that
 
annual
 
housing
 
change
 
has
 
exceeded
 
the
 
prior
 
decade
 
average
 
of
 
43,500
 
housing
 
units. Annual
 
average
 
housing
 
change
 
this
 
decade
 
is
 
33,200
 
units,
 
24%
 
below
 
the
 
prior
 
decade’s
 
average. Statewide,
 
54%
 
of
 
all
 
new
 
housing
 
units
 
were
 
associated
 
with
 
multi-family
 
structures. Figure
 
4. Change
 
in
 
Housing
 
Units
 
Summary
 
of
 
Population
 
Trends: Counties
 
and
 
Cities
  
Population
 
growth
 
remains
 
concentrated
 
in
 
the
 
five
 
largest
 
metropolitan
 
counties. For
 
the
 
third
 
year
 
in
 
a
 
row,
 
nearly
 
70%
 
of
 
state
 
population
 
growth
 
occurred
 
in
 
the
 
state’s
 
five
 
largest
 
counties: Clark,
 
King,
 
Pierce,
 
Snohomish
 
and
 
Spokane. King
 
County
 
accounted
 
for
 
the
 
largest
 
share
 
of
 
state
 
growth
 
this
 
year,
 
at
 
31%,
 
followed
 
by
 
Pierce
 
and
 
Snohomish
 
at
 
11%
 
each. The
 
state’s
 
20
 
nonmetropolitan
 
counties
 
accounted
 
for
 
8%
 
of
 
population
 
growth,
 
about
 
the
 
same
 
as
 
the
 
previous
 
year.