ASPRS REGION BOUNDARY DEFINITIONS
[Last updated March 2005]

Alaska:

  • the entire state of Alaska

 

Central New York

  • the entire state of Vermont
  • the following counties in the state of New York

 

Albany

Genesee

Otsego

Allegany

Greene

Rensselaer

Broome

Hamilton

Saratoga

Cattaraugus

Herkimer

Schenectady

Cayuga

Jefferson

Schoharie

Chautauqua

Lewis

Schuyler

Chemung

Livingston

Seneca

Chenango

Madison

St. Lawrence

Clinton

Monroe

Steuben

Columbia

Montgomery

Tioga

Cortland

Niagara

Tompkins

Delaware

Oneida

Warren

Erie

Onondaga

Washington

Essex

Ontario

Wayne

Franklin

Orleans

Wyoming

Fulton

Oswego

Yates

 

  • the following counties in the state of Pennsylvania

 

Bradford

Forest

Sullivan

Cameron

Lycoming

Tioga

Clinton

McKean

Warren

Elk

Potter

 

 

Central

  • the entire state of Arkansas
  • the entire state of Kansas
  • the entire state of Oklahoma
  • the following counties in the state of Missouri

 

Barry

Henry

Pettis

Barton

Hickory

Phelps

Bates

Howell

Polk

Benton

Iron

Pulaski

Bollinger

Jasper

Reynolds

Butler

Johnson

Ripley

Camden

Laclede

Saline

Cape Girardeau

Lafayette

Scott

Carter

Lawrence

Shannon

Cass

Madison

St. Clair

Cedar

Maries

St. Francois

Christian

McDonald

Ste. Genevieve

Cole

Miller

Stoddard

Cooper

Mississippi

Stone

Crawford

Moniteau

Taney

Dade

Morgan

Texas

Dallas

New Madrid

Vernon

Dent

Newton

Washington

Douglas

Oregon

Wayne

Dunklin

Osage

Webster

Franklin

Ozark

Wright

Gasconade

Pemiscot

 

Greene

Perry

 

 

Columbia River:

  • the entire state of Oregon
  • the following counties in the state of Washington

 

Asotin

Cowlitz

Skamania

Benton

Garfield

Wahkiakum

Clark

Klickitat

Walla Walla

Columbia

Pacific

 

 

Eastern Great Lakes

  • the entire state of Ohio
  • the lower peninsula of the state of Michigan
  • the following counties in the state of Pennsylvania

 

Allegheny

Crawford

Mercer

Armstrong

Erie

Somerset

Beaver

Fayette

Venango

Butler

Greene

Washington

Cambria

Indiana

Westmoreland

Clarion

Jefferson

 

Clearfield

Lawrence

 

 

  • the following counties in the state of West Virginia

 

Brooke

 

 

Hancock

 

 

Marshall

 

 

Ohio

 

 

 

Florida

  • the entire state of Florida
  • the Commonwealth of Puerto Rico
  • the Virgin Islands

 

Intermountain

  • the entire state of Idaho
  • the entire state of Utah

 

Mid-South

  • the entire state of Alabama
  • the entire state of Georgia
  • the entire state of Kentucky
  • the entire state of Louisiana
  • the entire state of Mississippi
  • the entire state of South Carolina
  • the entire state of Tennessee
  • the entire state of Texas

 

New England

  • the entire state of Maine
  • the entire state of Massachusetts
  • the entire state of New Hampshire
  • the entire state of Rhode Island
  • the entire state of Connecticut

 

North Atlantic

  • the entire state of New Jersey
  • the following counties in the state of New York

 

Bronx

Orange

Suffolk

Dutchess

Putnam

Sullivan

Kings

Queens

Ulster

Nassau

Richmond

Westchester

New York

Rockland

 

 

the following counties in the state of Pennsylvania

 

Berks

Lancaster

Northumberland

Bucks

Lebanon

Philadelphia

Carbon

Lehigh

Pike

Chester

Luzerne

Schuylkill

Columbia

Monroe

Susquehanna

Dauphin

Montgomery

Wayne

Delaware

Montour

Wyoming

Lackawanna

Northampton

 

 

Northern California

  • the entire state of Hawaii
  • the following counties in the state of California

 

Alameda

Marin

Santa Clara

Alpine

Mariposa

Santa Cruz

Amador

Mendocino

Shasta

Butte

Merced

Sierra

Calaveras

Modoc

Siskiyou

Colusa

Monterey

Solano

Contra Costa

Napa

Sonoma

Del Norte

Nevada

Stanislaus

El Dorado

Placer

Sutter

Fresno

Plumas

Tehama

Glenn

Sacramento

Trinity

Humboldt

San Benito

Tuolumne

Lake

San Francisco

Yolo

Lassen

San Joaquin

Yuba

Madera

San Mateo

 

  • the following counties in the state of Nevada

 

Carson City

Eureka

Mineral

Churchill

Humboldt

Pershing

Douglas

Lander

Storey

Elko

Lyon

Washoe

 

Potomac

  • the entire state of Delaware
  • the entire state of District of Columbia
  • the entire state of Maryland
  • the entire state of North Carolina
  • the entire state of Virginia
  • the following counties in the state of Pennsylvania

 

Adams

Franklin

Perry

Bedford

Fulton

Snyder

Blair

Huntingdon

Union

Centre

Juniata

York

Cumberland

Mifflin

 

 

  • the following counties in the state of West Virginia

 

Barbour

Kanawha

Preston

Berkeley

Lewis

Putnam

Boone

Lincoln

Raleigh

Braxton

Logan

Randolph

Cabell

Marion

Ritchie

Calhoun

Mason

Roane

Clay

McDowell

Summers

Doddridge

Mercer

Taylor

Fayette

Mineral

Tucker

Gilmer

Mingo

Tyler

Grant

Monongalia

Upshur

Greenbrier

Monroe

Wayne

Hampshire

Morgan

Webster

Hardy

Nicholas

Wetzel

Harrison

Pendleton

Wirt

Jackson

Pleasants

Wood

Jefferson

Pocahontas

Wyoming

 

Puget Sound

  • the province of British Columbia in the country of Canada
  • the following counties in the state of Washington

 

Adams

King

Skagit

Chelan

Kitsap

Snohomish

Clallam

Kittitas

Spokane

Douglas

Lewis

Stevens

Ferry

Lincoln

Thurston

Franklin

Mason

Whatcom

Grant

Okanogan

Whitman

Grays Harbor

Pend Oreille

Yakima

Island

Pierce

 

Jefferson

San Juan

 

 

Rocky Mountain

  • Colorado
  • the entire state of Montana
  • the entire state of New Mexico
  • the entire state of Wyoming

 

St. Louis

  • the entire state of Iowa
  • the entire state of Nebraska
  • the entire state of North Dakota
  • the entire state of South Dakota
  • the following counties in the state of Illinois

 

Adams

Greene

Piatt

Alexander

Hamilton

Pike

Bond

Hardin

Pope

Brown

Jackson

Pulaski

Calhoun

Jasper

Randolph

Cass

Jefferson

Richland

Champaign

Jersey

Saline

Christian

Johnson

Sangamon

Clark

Lawrence

Schuyler

Clay

Logan

Scott

Clinton

Macon

Shelby

Coles

Macoupin

St. Clair

Crawford

Madison

Tazewell

Cumberland

Marion

Union

De Witt

Mason

Vermilion

Douglas

Massac

Wabash

Edgar

McLean

Washington

Edwards

Menard

Wayne

Effingham

Monroe

White

Fayette

Montgomery

Williamson

Franklin

Morgan

Woodford

Fulton

Moultrie

 

Gallatin

Perry

 

 

  • the following counties in the state of Missouri

 

Adair

Grundy

Nodaway

Andrew

Harrison

Pike

Atchison

Holt

Platte

Audrain

Howard

Putnam

Boone

Jackson

Ralls

Buchanan

Jefferson

Randolph

Caldwell

Knox

Ray

Callaway

Lewis

Schuyler

Carroll

Lincoln

Scotland

Chariton

Linn

Shelby

Clark

Livingston

St. Charles

Clay

Macon

St. Louis

Clinton

Marion

St. Louis City

Daviess

Mercer

Sullivan

DeKalb

Monroe

Warren

Gentry

Montgomery

Worth

 

Southwest US

  • the entire state of Arizona
  • the following counties in the state of California

 

Imperial

Mono

San Luis Obispo

Inyo

Orange

Santa Barbara

Kern

Riverside

Tulare

Kings

San Bernardino

Ventura

Los Angeles

San Diego

 

 

  • the following counties in the state of Nevada

 

Clark

Nye

 

Esmeralda

White Pine

 

Lincoln

 

 

 

Western Great Lakes

  • the entire state of Indiana
  • the entire state of Minnesota
  • the entire state of Wisconsin
  • the upper peninsula of the state of Michigan
  • the following counties in the state of Illinois

 

Boone

Jo Daviess

Mercer

Bureau

Kane

Ogle

Carroll

Kankakee

Peoria

Cook

Kendall

Putnam

DeKalb

Knox

Rock Island

DuPage

La Salle

Stark

Ford

Lake

Stephenson

Grundy

Lee

Warren

Hancock

Livingston

Whiteside

Henderson

Marshall

Will

Henry

McDonough

Winnebago

Iroquois

McHenry