GIS Data Catalog

Cities with Pending Annexations and Annexation History

Cities with Pending Annexations and Annexation History

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This map visualizes the selected dataset. Text summary, description, and attribute information are available elsewhere on this page.

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Summary

This layer shows the annexation and incorporation activity in King County since 1990.

For simple current city boundaries look at CITY_Area which is a derivative of City_Annex_Area.

City_Annex_Area is jointly maintained by DDES and Assessments.

Description

City data showing pending annexations and annexation history.

This will be the parent of city_kc_area and city_area.

Layer information

Layer Name city_annex_area
Subject Category Administrative
Title Cities with Pending Annexations and Annexation History
Feature Count 1198
Feature Type Polygon
Next Update As needed
Spatial reference EPSG:2926
Control ID 495
Place Keywords Washington State, King County, WA, Pacific NW
Theme Keywords Admin, None, Administration
Supplemental Information

DDES and KCA city layers were merged into one shared layer during December of 2006.

The data was migrated from a coverage to a geodatabase where both DDES and KCA can share in the maintenance of the layer.

City_Annex_Area differs from City_Dist and CityLevy layers.

City_Dist reflects voter district boundaries generalized to the roadway if the boundary is a city boundary.

CityLevy reflects the current tax roll year city taxing districts.

Table Preview

Attribute information

EFF_DATE

From DDES

 Description

Effective date of the annexation

Domain

0 to 20070115 by 1
ANNEX_NAME

From DDES

 Description

Name of annexation

Domain

Not Found
SHAPE

From ESRI

 Description

Feature Geometry

Domain

Coordinates defining the features
OBJECTID

From ESRI

 Description

Internal feature number.

Domain

Sequential unique whole numbers that are automatically generated.
BRB_ACRES

From Boundary Review Board

 Description

Boundary Review Board Acres

Domain

0.00000000 to 13556.00000000 by

JURIS

From King County

 Description

2 Letter Abbreviation

Domain

AL - Algona

AU - Auburn

BA - Beaux Arts

BD - Black Diamond

BE - Bellevue

BO - Bothell

BU - Burien

CA - Carnation

CH - Clyde Hill

CO - Covington

DM - Des Moines

DU - Duvall

EN - Enumclaw

FW - Federal Way

HP - Hunts Point

IS - Issaquah

KC - King County

KE - Kent

KI - Kirkland

KM - Kenmore

LF - Lake Forest Park

ME - Medina

MI - Mercer Island

MT - Milton

MV - Maple Valley

NB - North Bend

NC - Newcastle

NP - Normandy Park

PA - Pacific

RM - Redmond

RN - Renton

SE - Seattle

SH - Shoreline

SK - Skykomish

SM - Sammamish

SN - Snoqualmie

ST - SeaTac

TU - Tukwila

WO - Woodinville

YP - Yarrow Point
BRBNO

From Boundary Review Board

 Description

Boundary Review Board Number

Domain

0 to 2223 by 1
ORDNO

From DDES

 Description

Ordinance number

Domain

0 to 921003 by 1
BRB_VALUE

From Boundary Review Board

 Description

Assessed value

Domain

0.00000000 to 2900000000.00000000 by

KCA_ROLLYR

From KCA

 Description

Tax Roll Year for which the annexation is effective

Domain

0 to 2008 by 1
BRB_POP

From Boundary Review Board

 Description

Population of annexation area

Domain

0.00000000 to 62000.00000000 by

DDES_STATUS

No Source Noted

 Description

Not Found

Domain

0

1 - Incorporated Area

2 - Recently Annexed or Incorporated Area

3 - Boundary Review Board Approved (Pending)

4 - Boundary Review Board Pending

6 - Withdrawn

7 - Denied

8 - Failed Vote
KCA_RES_ORD

No Source Noted

 Description

Resolution or Ordinance

Domain

Not Found
Shape.STArea()

From SQL Server

 Description

Returns the area of a geometry instance in square units, based on the spatial reference identifier (SRID) of the geometry.

Domain

Double
Shape.STLength()

From SQL Server

 Description

Returns the total length of the elements in a geometry instance.

Domain

Double

Contact information

Maintained by Department of Assessments
Primary Christie Most

christie.most@kingcounty.gov

Terms of Use

License Terms of use and copyright

This map visualizes the selected dataset. Text summary, description, and attribute information are available elsewhere on this page.

Summary

This layer shows the annexation and incorporation activity in King County since 1990.

For simple current city boundaries look at CITY_Area which is a derivative of City_Annex_Area.

City_Annex_Area is jointly maintained by DDES and Assessments.

Description

City data showing pending annexations and annexation history.

This will be the parent of city_kc_area and city_area.

Contact information

Maintained by Department of Assessments
Primary Christie Most

christie.most@kingcounty.gov

Terms of use and copyright

License Terms of use and copyright

Change history

1/1/2026

Addition of five contiguous, city-owned parcels (212970-0240, 212970-0245, 212970-0260, 212970-0270, and 212970-0271) adjacent to Big Rock Park for municipal purposes, as per City of Duvall Ord.

No.

1341, effective January 1, 2026.
9/23/2025

Addition of a portion of the SE 440th Street right of way to the City of Enumclaw as per KC Ord No 19973 and Addition of a portion of the 384th Ave SE right of way to the City of Snoqualmie as per KC Ord No 19974.
7/1/2024

Addition of the NE 97th Street Annexation to the City of Redmond, as per BRB File 2418 and City of Redmond Ordinance 3165.
3/27/2024

Previous 2022 Annexation of SE 448th St right-of-way (from the wester right-of-way of 244th Ave SE approximately 1148' westerly) to the City of Enumclaw as per file LUA 2022-0041 – Gambrel Preliminary Plat.
1/1/2024

Annexation of the property known as The Bridges, currently located in the City of Kent, into the City of Auburn as per Auburn Ordinance No.

6928, pusuant to RCW 35.10.217(2).
11/1/2023

City of Redmond annexation of city-owned parcel 272605-9145 via Ordinance No.

3128, pursuant to RCW 35A.14.300, Annexation For Municipal Purposes.
3/13/2023

Addition of Grace Point Annexation to the City of Enumclaw as per BRB 2413 and City of Enumclaw Ord No 2479.
11/23/2021

Addition of Falkenberg Annexation to the City of Carnation as per BRB 2397 and Carnation Ord No 926.
10/19/2021

Correction to southern boundary of the 240th and 180th St Park annexation to the City of Covington as per OrdNo 908.
8/27/2021

Addition of City of Woodinville Roundabout annexation, City of North Bend 428th Ave SE and SE 136th & 436th Ave SE boundary revisions.
2/22/2021

Addition of Graves Annexation area to the City of Renton as per BRB2404 and Renton Ord No 6011.
2/12/2021

Addition of Mt Rainier Christian Center Annexation (BRB2402) to the City of Enumclaw via ORD 2691.
9/3/2020

Addition of Warner Ave/SE 456th Street Annexation area to the City of Enumclaw and modification of the NE corner of the South 320th Street Annexation to the City of Federal Way.
7/29/2020

Addition of the South 320th Street Annexation area to the City of Federal Way
12/22/2019

Addition of the Bill Annexation area to the City of Renton and addition of ROW to the City of Normandy Park
10/30/2019

Addition of Highland Meadows annexation area to the City of Renton
7/23/2019

Addition of Hill Creek Annexation Area to the City of Milton.
5/29/2019

Recent Annexations to Renton and Maple Valley and pending annexation to Milton, adjustments to match redrawn cadastral features.
3/23/2018

Recent Annexations, adjustments to match redrawn cadastral features, and correction to remove a portion of 205th Street NW incorrectly included in the original Shoreline incorporation area.
1/23/2018

Recent Annexations, adjustments to match redrawn cadastral features
7/7/2017

Recent Annexations, adjustments to match redrawn cadastral features
6/29/2016

Recent Annexations, adjustments to match redrawn cadastral features
4/14/2016

Recent Annexations, adjustments to match redrawn cadastral features
8/17/2015

Added old park annexation to Enumclaw on White river.
6/26/2015

Added new annexations.

Added the date for the upcomming Klahannie Annexation to Sammamish, added a polygon for the old annexation to Enumclaw that has never been in the Annexation layer.

Assements is still researching the legal description so I have not coded it as annexed yet.
1/13/2015

Updated with 3 effective Renton annexations, 1 pending Issaquah annexation, and a proposed annexation each for Seattle and Sammamish.

Many thanks to Daisy Tamayo for her tireless efforts mapping legal descriptions.
2/28/2014

Updated with several annexations, most notably Bothel Islands.
6/6/2013

Added Annexations from October 2012 through May 2012. Added Park Annexation to Enumclaw from 1996 which was brought to light only since last update. Historic details added by Daisy Tamayo including changes to KC boundary along the white river
10/30/2012

Added Annexations from Late July 2012 through October 2012. Lots of old details added by Daisy Tamayo.
Update 30

Recent Annexations, adjustments to match redrawn cadastral features
Update 31

Updated with several annexations of varying vintages.

Several ROW annexations now documented.