I would need a list of inactive or closed airfields in the following
areas : Kansas, Illinois, Colorado and Nevada

Hello Markoh-ga,  
 
Thank you for your question.


My search returned the following results for closed or inactive
airfields in Kansas, Illinois, Colorado and Nevada.

======
Kansas 
======

Copeland Landing Strip
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_E.htm#copeland

Edna Aux AAF
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_E.htm#edna

Fairfax AAF
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_E.htm#fairfax

(Original) Salina Airport
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_E.htm#salina

State Line Airpark 
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_E.htm#stateline

Strother South Aux AAF #5
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_E.htm#strotheraux5

Dodge City AAF
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_W.htm#dodge

Garden City Aux AAF #1
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_W.htm#gardencity

Hutchinson NAS
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_W.htm#hutchinson

Walker AAF
http://members.tripod.com/airfields_freeman/KS/Airfields_KS_W.htm#walker



========
Illinois
========

Arlington NOLF
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#arlington

Glenview NAS
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#glenview

Governor's Airpark
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#governors

Haley AAF
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#haley

Homer Airport
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#homer

Libertyville NOLF
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#libertyville

Parks College Airport
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#parks

Sky Harbor Airport
http://members.tripod.com/airfields_freeman/IL/Airfields_IL.htm#skyarbor


========
Colorado
========

Arlington Aux AAF #4
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#arlington

Avon Airport
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#avon

Breckenridge STOLport
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#breckenridge

Las Animas Aux AAF #2
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#lasanimas

Lowry AFB
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#lowry

Rocky Ford Aux AAF #1
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#rockyford

Ruston Field 
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#ruston

Sky Ranch Airport
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#skyranch

Stapleton International
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#stapelton

Star Nelson Airport
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#starnelson

USAF Academy North Aux Airfield
http://members.tripod.com/airfields_freeman/CO/Airfields_CO.htm#afcademyn


======
Nevada
======

Austin NOLF
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#austin

Basecamp Airfield
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#basecamp

Caliente Flight Strip
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#caliente

Delamar Lake Landing Strip
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#delamar

Mellan Airstrip
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#mellan

Mellan North Landing Strips
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#mellannorth

Naval Target Area Baker 17 Airfield
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#baker17

Sutcliffe NOLF
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#sutcliffe

Sweetwater MCAF 
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#sweetwater

Tonopah Test Range
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_N.htm#tonopah

Alamo Landing Field
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#alamo

Bonnie Claire Airport
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#bonnieclaireairport

Bonnie Claire Lake Landing Strip 
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#bonnieclairelake

(Original) Boulder City Municipal
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#bouldercity

Desert Rock Airfield 
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#desertrock

Groom Lake
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#groom

Indian Springs AF Aux
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#indiansprings

Pahute Mesa Airstrip
http://www.post8.org/members.tripod.com/airfields_freeman/NV/Airfields_NV_S.htm#pahute



Search Criteria:

Closed OR inactive airfields Kansas
Closed OR inactive airfields Illinois
Closed OR inactive airfields Colorado
Closed OR inactive airfields Nevada



I hope the above information meets your needs. If anything is unclear
please request clarification and I'll be glad to offer further
assistance before you rate my answer.


Best Regards,
Bobbie7-ga

Thank you very much for the tip!
--Bobbie7