Mike Sullivan
Tax Assessor-Collector

Contact The Harris County Tax Office

Open Government

In our commitment to open government, we invite open records requests in writing. Click here to access an Open Records Request form.

Once you have completed the form listing the requested information, you may mail it to:
Harris County Tax Office,
P.O. Box 4663
Houston, Texas 77210-4663

Please do not include open records requests with any other Tax Office correspondence.

Main Telephone Number:


Military Help Desk:

713-274- HERO (4376)

Physical Address Downtown:

1001 Preston St.
Houston, Texas 77002

Office Hours:

Downtown and Branch Offices normal hours:
Monday - Friday, 8:00 AM through 4:30 PM

Web Addresses for this Web site:


Location of Branch Offices:

All branch locations can be found on our homepage.

Harris County Holiday Schedule

Customer Service E-mail Address:

tax.office@hctx.net (Tax, voter registration, and auto questions)

For technical issues:

taxwebmaster@hctx.net (For technical questions only. All other inquiries will be forwarded to the Customer Service e-mail address)

Voter Registration:

Mike Sullivan
Voter Registrar
P.O. Box 3527
Houston, Texas 77253-3527

Property Tax Payments:

Mike Sullivan
Tax Assessor-Collector
P.O. Box 3547
Houston, Texas 77253-3547

Property Tax Correspondence:

Mike Sullivan
Tax Assessor-Collector
P.O. Box 4663
Houston, Texas 77210-4663

Automobile Title/License:

Mike Sullivan
Tax Assessor-Collector
P.O. Box 4089
Houston, Texas 77210-4089