Short answer: Cameron County's own 2025 rate is 0.424393% of taxable value ($0.424393 per $100). It's one line of your bill. Your city, school district and special districts add the rest.
$400,000 homestead in Brownsville: $140,000 school homestead exemption, no local optional exemptions assumed.
Cameron County $1,698
Brownsville $2,414
Brownsville ISD $2,162
Example: $400,000 homestead in Brownsville
Unit
Taxable
Rate
Tax
Cameron County
$400,000
0.424393%$0.424393 per $100
$1,697.57
Brownsville
$400,000
0.603504%$0.603504 per $100
$2,414.02
Brownsville ISD
$260,000
0.83146%$0.83146 per $100
$2,161.80
Total
1.859357%$1.859357 per $100
$6,273.38
Cameron County bills can include navigation, port, drainage and college districts depending on the address (15 special districts in the 2025 data). The example below shows only the county, city and school district. Check your account for the others.
Protest deadline: May 15 (next business day if that falls on a weekend), or 30 days after the notice is mailed — whichever is later (Tax Code §41.44). Check your notice.
County rate
Cameron County 2025 county rate
Taxing unit
Rate
Tax on $100,000
Cameron County
0.424393%$0.424393 per $100
$424
City rates (18)
Cities in Cameron County, 2025. (split) = spans more than one county
Taxing unit
Rate
Tax on $100,000
Bay View
0.25%$0.25 per $100
$250
Brownsville
0.603504%$0.603504 per $100
$604
City of Los Indios
0.55%$0.55 per $100
$550
Combes
0.7%$0.70 per $100
$700
Harlingen
0.52606%$0.52606 per $100
$526
Indian Lake
0.765%$0.765 per $100
$765
La Feria
0.735%$0.735 per $100
$735
Laguna Vista
0.454124%$0.454124 per $100
$454
Los Fresnos
0.685%$0.685 per $100
$685
Palm Valley
0.484133%$0.484133 per $100
$484
Port Isabel
0.790416%$0.790416 per $100
$790
Primera
0.6%$0.60 per $100
$600
Rancho Viejo
0.45%$0.45 per $100
$450
Rio Hondo
0.804012%$0.804012 per $100
$804
San Benito
0.708125%$0.708125 per $100
$708
Santa Rosa
0.82%$0.82 per $100
$820
South Padre Island
0.262159%$0.262159 per $100
$262
Starbase
0.55%$0.55 per $100
$550
School district rates (10)
School districts in Cameron County, 2025
Taxing unit
Rate
Tax on $100,000
Brownsville ISD
0.83146%$0.83146 per $100
$831
Harlingen CISD
0.9182%$0.9182 per $100
$918
La Feria ISD
1.030683%$1.030683 per $100
$1,031
Los Fresnos CISD
0.880272%$0.880272 per $100
$880
Lyford CISD (split)
1.0962%$1.0962 per $100
$1,096
Point Isabel ISD
0.7303%$0.7303 per $100
$730
Rio Hondo ISD
1.3419%$1.3419 per $100
$1,342
San Benito CISD
1.0506%$1.0506 per $100
$1,051
Santa Maria ISD
1.2614%$1.2614 per $100
$1,261
Santa Rosa ISD
1.281904%$1.281904 per $100
$1,282
Special district rates (15)
Special districts in Cameron County, 2025 (MUDs, ESDs, hospital, college and others)
Taxing unit
Rate
Tax on $100,000
Brownsville Navigation District
0.025589%$0.025589 per $100
$26
Cameron County DD #1
0.026983%$0.026983 per $100
$27
Cameron County DD #4
0.062551%$0.062551 per $100
$63
Cameron County DD #5
0.142783%$0.142783 per $100
$143
Cameron County DD #6
0.157615%$0.157615 per $100
$158
Cameron County ESD #1
0.062736%$0.062736 per $100
$63
Laguna Madre WD
0.122714%$0.122714 per $100
$123
Long Island Village
0.540179%$0.540179 per $100
$540
Paseo de la Resaca MUD #1
0.275%$0.275 per $100
$275
Paseo de la Resaca MUD #2
0.25%$0.25 per $100
$250
Paseo de la Resaca MUD #3
0.285%$0.285 per $100
$285
Port of Harlingen Authority
0.01911%$0.01911 per $100
$19
San Benito Drainage District #3
0.137671%$0.137671 per $100
$138
Southmost Union College District
0.111809%$0.111809 per $100
$112
Valley MUD #2
0.4385%$0.4385 per $100
$439
A rate of X% is the same number as $X per $100 of taxable value. Source: Texas Comptroller, 2025 Tax Rates and Levies (version 01/28/2026), adopted totals (M&O + I&S). Cameron County's rate is the 0.424393% it adopted for 2025 (county Truth-in-Taxation summary and Cameron CAD adopted-rate list); the Comptroller row adds a 0.049765% road and bridge rate that does not appear on either. See methodology.