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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

(913) 715-7000
(913) 715-7005 fax

Map to our office

Current News

Knowledge For Life Newsletter:

March 2019:


Free Income Tax Preparation

VITA Free Income Tax Preparation

Feb. 6 - April 13

  • Wednesdays: Noon - 4:30 p.m. (or until full)
  • Thursdays: Noon - 4:30 p.m. (or until full)
  • Saturdays: 8:30 a.m. – 12:30 p.m. (or until full)

First Come/First Served, no appointments


10TH Annual Healthy Yards Expo logo


 4-H campers in swimming pool

4-H Summer Camps
Registration now open!

Overnight Camp:

Cooking Day Camps:


Walk Kansas logo


Radon Kit

Radon Kits: Kits are available year-round



Soil sample in pyrex cup and soil test form Free Soil Testing for Johnson County Residents

How to take a soil test

Why take a soil test

AG Soil Testing


Office Hours:

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

Map 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.