Treasurer’s Office

The Treasurer is elected by the county voters at large as an independent office and is subject to guidance from the Department of Finance and Administration. Neither the Board of County commissioners nor the Board of Finance has superintending management or supervisory authority over the Treasurer’s Office. All investment actions are by advice and consent. The Treasurer's Office is a public office. 

Socorro County Treasurer

                RoseMary Rosas

Rose Mary Rosas


575-835-1701 Ext 2306
Fax: 575-838-0891


Monday - Friday, 8:00 AM to 5:00 PM

The Treasure's Office is closed for all federal holidays.

Rose Mary Rosas was elected the Socorro County Treasurer in 2021 and is serving her first term through 2024. 

Socorro County Chief Deputy Treasurer 

Blanca Jaquez

Blanca Jaquez

Chief Deputy Treasurer

575-835-1701 x2305

Fax: 575-838-0891


Monday - Friday, 8:00 AM to 5:00 PM

The Treasure's Office is closed for all federal holidays.

Rose Mary Rosas has appointed Blanca Jaquez as her Chief Deputy Treasurer.

The NM Mortgage Finance Authority (NM MFA) has started up their  

housing grants to income-eligible households experiencing financial hardship associated with the COVID-19 health crisis.

These grants are to fund mortgage payments, taxes, and insurance up to $20,000 per household, to maintain housing and/or to reduce housing cost delinquency.

New Mexico homeowners can apply for (1) home loan reinstatement,

(2) payment assistance for households receiving unemployment benefits and

(3) assistance for homeownership insurance costs and delinquent property taxes.

Requests are processed in the order received.   Requests are funded in the order received depending on the availability of funding.


There is an online contact as well as an ‘Apply Now’ on their website:

Their website does have English/Spanish options on the top right of their site page.

For those without internet, here is their phone #s:  call 505.308.4206 or 866.488.0498

Because it is an ‘income-eligible’ program, there is documentation the homeowner must provide along with an application. 

Office Hours:
Mon-Fri 8 a.m. - 4:30 p.m.

We are open through the lunch hour.

P.O. Box KK

200 Church Street

Socorro, NM 87801

The Socorro County Treasurer is the ex-officio collector for all taxing authorities in Socorro County. Taxing authorities include such organizations as the State of New Mexico, school districts, community colleges, municipalities, and soil & water, and river authorities. The County Treasurer also is responsible for reconciling all other money due to other county departments, such as fees for services, licenses, and revenues from bond issues and special assessments.

The Treasurer assures the legality and propriety of deposits, and disbursements and invests surplus money until they are needed for county operations. 

Upon the County Assessor's assessed valuation, the Treasurer prepares and mails property tax bills and delinquency notices, and subsequently collects the real and personal property taxes of Socorro County property owners. The Treasurer also serves as a banker to all other revenues, such as proceeds from bond issues and special assessments. The Treasurer invests surplus funds until they are needed for county operations.

Forms & Documents

Property Taxes

How to Pay

Property tax payments can be made online, by mail, or in person. It is the responsibility of the property owner to ensure property taxes are paid. If someone else is to pay on your behalf, such as your lender or escrow company, you will need to contact them directly regarding this matter.

If you are paying by mail but do not have your payment coupons, please be sure to write the tax bill number or account number on your check; this ensures proper crediting of your payment. 

If you do not have either number for your property, please call 575-835-1701 or look up your account online

For more complete information regarding property tax owner, name change, address correction, valuation, and more, please contact the County Assessor at 575-835-0714 or visit their department page.

Due Dates

Q: When are property tax bills mailed, and when are taxes due?
A: Tax bills are mailed on November 1st of every year, as required by state law. Taxes are due in two equal installments. The first half payment is due November 10th and must be paid by December 10th to avoid delinquent charges. Second-half payments are due by April 10th of the following calendar year and must be made by May 10 or the first business day thereafter to avoid delinquent charges. You will only receive one bill and no additional notice for the 2nd half installment.

You may also elect to make tax payments in pre-payment installments. 

Q: What is the last day to mail my taxes to avoid paying penalties and interest?
A: First-half payments or full payments must be postmarked by December 10th. Second-half payments must be mailed by May 10th. If those deadlines fall on a Sunday, the date will be extended to the next business day.

Mortgage Company Payments

Your mortgage company usually pays your property taxes. It is your responsibility to forward the tax bill to your mortgage company for payment. By State law, the property owner is responsible to make sure that the mortgage company has paid the property taxes owed.

To determine if your mortgage company has made your payment, call us at 575-835-0714. You will need your tax bill number, owner name or parcel identification number. You may also check your account online.


If an overpayment should occur for property taxes upon the Treasurer’s discretion amount of overpayment may be applied as a credit to next year's tax bill otherwise a refund will be issued to the taxpayer with a $25.00 processing fee apply.

Mortgage Companies will be refunded any overpayment, with a processing fee of $25.00 applicable.

Penalty & Interest

If you did not receive your property tax bill and the taxes are now delinquent, you are responsible for penalty and interest charges. By State law, the property owner is responsible for paying the taxes on time, whether you receive a tax bill. If you have not received your tax bill by November 15th, call us at 575-835-0714 for help.

Delinquent Taxes

If your taxes become delinquent, by State law (7-38-15 NMSA 1978), each June the County will mail a delinquency notice to the assessed property owner for any tax bill 30 or more days delinquent. The notice will inform the owner that if the taxes on real property, including penalty and interest charges, are not paid within two years from the date of delinquency, the property will be sold at a state public auction. For owners of mobile homes and personal property, the notice will state that the property is subject to seizure and subsequent sale after six months from the date of delinquency.

Q: What can I do if my delinquent taxes have been transferred to the New Mexico State Property Tax Division for collection?
A: Once taxes have been transferred to the Division for collection, all delinquent taxes, penalties, interest, and costs must be paid in full or your property may be offered for sale at public auction. If a property owner is unable to pay in full, the owner may prevent the sale of the property by entering into an Installment Agreement with the State Property Tax Division for payment on all outstanding liabilities.

Q: I have been contacted by the New Mexico State Property Tax Division and informed that my property will be sold at a public auction. I owe back taxes for prior years. May I just pay the oldest delinquent tax to prevent the sale of the property?
A: Real property owners who owe three or more years of prior taxes will have their property sold by the State unless delinquent taxes, interest, and penalty charges for all years are paid in full by the date of the sale of the property (4-38-65-NMSA 1978).

Delinquent Tax Property Sales

Q: How can I obtain a listing of properties that may be sold for delinquent taxes?
A: All tax sale lists must be published in a newspaper of general circulation for three weeks preceding the week of the sale. 

You may also pick up a calendar of currently scheduled sales and/or current sales lists in Santa Fe at The Manuel Lujan Building, 1200 S. St. Francis Drive.

Requests should be sent to:

New Mexico Property Tax Division
PO Box 25126
Santa Fe, NM 87504-5126
Phone (505) 827-0786
Fax (505) 827-0782 

Parcel Buyer & Seller Resource

This resource allows potential sellers and buyers the opportunity to provide their contact information to buyers or sellers of unwanted real property. 


turn the button above into a link to this page

If your listing is no longer valid, please email the Treasurer’s Office to: to remove the listing. Please identify data exactly as it is listed on the website to ensure correct data is being removed.

Potential Buyers

Potential Buyers

Potential Sellers

Potential Sellers