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Union County Property Tax Due Date

New Mexico

(575) 374-2331

2026 Property Tax Due Dates

Official Source
Installment 1

November 10

First half

Installment 2

April 10

Second half

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Penalty: $5 minimum + 1% monthly interestGrace period: Until Jan 10 / May 10

Payment Methods

Online, Mail, In-Person

Union County Treasurer

Office Address

200 Court Street
Clayton, NM 88415

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Mailing Address

PO Box 308, Clayton, NM 88415

Office Hours

Mon-Fri 8am - 5pm

How to Pay

Online

Pay using credit card or e-check

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By Mail

Mail check payable to Union County Treasurer — PO Box 308, Clayton, NM 88415

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In Person

Visit the Treasurer's office — 200 Court Street, Clayton NM 88415, Mon-Fri 8am - 5pm

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Other Counties in New Mexico

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About Union County

Union County (Spanish: Condado de la Unión) is the easternmost county in the U.S. state of New Mexico. As of the 2020 census, the population was 4,079, making it the fourth-least populous county in New Mexico. Its county seat is Clayton.

Source: Wikipedia — content available under CC BY-SA 4.0

Related Resources

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Union

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Property Tax FAQTax Calendar

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We'll email you a fortnight before your property taxes are due.

Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.