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Johnson County

Research-based Information You Can Trust — Localized for your needs

Johnson County
11811 S. Sunset Drive
Suite 1500
Olathe, KS 66061

Office Hours:

Monday - Friday,
8:30 a.m. - 5 p.m.

(913) 715-7000
(913) 715-7005 fax
jo@listserv.ksu.eduMap to our office

Kansas State University is committed to making its services, activities and programs accessible to all participants. If you have special requirements due to a physical, vision, or hearing disability, contact Johnson County K-State Research and Extension, 913-715-7000.

Kansas State University Agricultural Experiment Station and Cooperative Extension Service

K-State Research and Extension is an equal opportunity provider and employer.

Current Job Openings:

 Program Coordinator, Family & Consumer Sciences: Part-Time

Current News



 Knowledge For Life Newsletter:

December 2019


Cover of 2018 Annual Report2018 Annual Report

Scooping soil into a plastic bag for a soil sample




Free Soil Testing for Johnson County Residents
How to take a soil test
Why take a soil test

AG Soil Testing




 Radon Kit

Radon Kits: Kits are available year-round

Radon kit prices will be increasing from $8 to $10 dollar starting January 1st, 2020

Radon in Johnson County, Kansas

Testing for Radon

Buy your Do-It-Yourself radon test kit here