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Dimmit County Sheriff's Office

County · Dimmit County · TX

#666 of 2306 agencies by officer count

Agreement signed
December 10, 2025
Residential population
3,532FBI 2025
Sworn officers
32FBI 2025
Civilian staff
37FBI 2025
Total personnel
69FBI 2025
Memorandum of Agreement
View agreement →

Elections

Sheriff

No regularly scheduled sheriff election in 2026. Wrong? Let us know

How Dimmit County voted for president in 2024

Trump
48.2%
1,653
Harris
51.5%
1,765
Others
0.3%
9

Harris won the county by 3.3 points over Trump. 3,427 votes cast.

Sources: MIT Election Data and Science Lab · Bolts · Tex. Const. art. V, § 23 (four-year terms, elected in presidential years; art. XVI, § 65's staggering schedule was repealed in 1999)

Memorandum of Agreement

The full agreement between Dimmit County Sheriff's Office and ICE is available below.

View agreement →

Agreements on file

3 of 3 models on file

MOAs are not available for every agreement.

Jail Enforcement Signed December 10, 2025 View agreement →

  • Signed by Dimmit County Sheriff's Office: Chris A. Castaneda
  • Signed by ICE: Madison Sheahan, Deputy Director; ICE Field Office: San Antonio
  • Public affairs contact: Sheriff Chris Castaneda, 669 Industrial Blvd, Carrizo Springs, TX 78834 · (830) 876-3508 · ccastaneda@dimmitcounty.org

Named in the signed 287(g) agreement

Contact

Contact information for this agency is not yet available.

Agreement History

Dated by when each agreement was signed; where ICE's public data lagged more than two weeks behind, the first-seen date is noted too. Changes we can't tie to a signed document are dated by when they were detected.

    • + Jail Enforcement Model
    • + Task Force Model
    • + Warrant Service Officer

Data last updated October 16, 2026. ORI: TX0640000.

Dive deeper

The 287(g) participation data doesn't tell us anything about what happened after the agreement was signed. To learn more, the public will need to ask or formally request information. MuckRock is organizing public records requests about immigration enforcement nationwide:

287(g) Watch — a public-interest journalism project. Records, corrections, and tips welcome. Data is from public records and may contain errors or omissions.

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