133 ZIP codes ranked · 1,099,363 homes analyzed
The most over-assessed ZIP codes in Harris County
In 1,099,363 Harris County homes pulled from public appraisal records, 221,107 are assessed above what comparable homes of similar size in the same ZIP code are assessed at. That is 20.1% of the county, and an estimated $355.7M in property tax a year.
77042 in Houston ranks first at 35.6%. Your own ZIP's rank tells you about your neighborhood, not your house, so check your specific address below.
Check your address free. If your home is over-assessed, the pre-filled protest kit is a flat $49, one time. You keep 100% of the savings. 30-day refund.
All 133 Harris County ZIP codes, ranked
Ranked by the share of analyzed homes assessed above comparable homes in the same ZIP. Every ZIP shown has at least 50 analyzed homes; the smallest here has 333.
| # | ZIP | City | Homes analyzed (n) | Over-assessed | % over-assessed | Avg gap | Annual overpayment |
|---|---|---|---|---|---|---|---|
| 1 | 77042 | Houston | 4,012 | 1,430 | 35.6% | $133,484 | $4,103,974 |
| 2 | 77096 | Houston | 7,451 | 2,616 | 35.1% | $92,639 | $5,210,433 |
| 3 | 77079 | Houston | 7,999 | 2,691 | 33.6% | $149,810 | $8,667,500 |
| 4 | 77024 | Houston | 8,560 | 2,779 | 32.5% | $402,997 | $24,078,475 |
| 5 | 77078 | Houston | 4,036 | 1,299 | 32.2% | $33,354 | $931,551 |
| 6 | 77030 | Houston | 1,680 | 539 | 32.1% | $204,523 | $2,370,124 |
| 7 | 77026 | Houston | 6,001 | 1,919 | 32% | $65,932 | $2,720,276 |
| 8 | 77063 | Houston | 3,407 | 1,091 | 32% | $116,560 | $2,734,102 |
| 9 | 77012 | Houston | 3,380 | 1,082 | 32% | $63,795 | $1,484,074 |
| 10 | 77035 | Houston | 6,024 | 1,917 | 31.8% | $60,093 | $2,476,799 |
| 11 | 77011 | Houston | 4,026 | 1,274 | 31.6% | $64,538 | $1,767,785 |
| 12 | 77006 | Houston | 4,819 | 1,517 | 31.5% | $153,507 | $5,006,710 |
| 13 | 77520 | Baytown | 8,441 | 2,644 | 31.3% | $39,032 | $2,218,816 |
| 14 | 77009 | Houston | 11,167 | 3,484 | 31.2% | $120,112 | $8,997,179 |
| 15 | 77093 | Houston | 10,064 | 3,128 | 31.1% | $72,053 | $4,845,747 |
| 16 | 77022 | Houston | 6,499 | 2,019 | 31.1% | $72,619 | $3,152,297 |
| 17 | 77028 | Houston | 6,093 | 1,855 | 30.4% | $48,663 | $1,940,813 |
| 18 | 77023 | Houston | 5,957 | 1,793 | 30.1% | $77,408 | $2,984,055 |
| 19 | 77027 | Houston | 2,497 | 748 | 30% | $323,489 | $5,202,351 |
| 20 | 77017 | Houston | 6,059 | 1,804 | 29.8% | $48,380 | $1,876,501 |
| 21 | 77061 | Houston | 3,482 | 1,032 | 29.6% | $54,151 | $1,201,516 |
| 22 | 77547 | Galena Park | 2,324 | 687 | 29.6% | $41,762 | $616,846 |
| 23 | 77029 | Houston | 5,117 | 1,502 | 29.4% | $43,650 | $1,409,618 |
| 24 | 77037 | Houston | 3,568 | 1,040 | 29.1% | $67,967 | $1,519,756 |
| 25 | 77056 | Houston | 3,195 | 926 | 29% | $298,565 | $5,944,135 |
| 26 | 77506 | Pasadena | 6,456 | 1,859 | 28.8% | $39,908 | $1,595,099 |
| 27 | 77019 | Houston | 5,256 | 1,515 | 28.8% | $515,636 | $16,795,585 |
| 28 | 77005 | Houston | 7,157 | 2,050 | 28.6% | $356,401 | $15,708,399 |
| 29 | 77039 | Houston | 4,782 | 1,369 | 28.6% | $57,657 | $1,697,056 |
| 30 | 77008 | Houston | 13,070 | 3,712 | 28.4% | $151,301 | $12,075,079 |
| 31 | 77336 | Huffman | 5,033 | 1,431 | 28.4% | $88,520 | $2,723,454 |
| 32 | 77098 | Houston | 2,493 | 709 | 28.4% | $179,415 | $2,734,917 |
| 33 | 77087 | Houston | 7,452 | 2,093 | 28.1% | $48,245 | $2,171,026 |
| 34 | 77587 | South Houston | 3,256 | 914 | 28.1% | $47,211 | $927,758 |
| 35 | 77033 | Houston | 8,820 | 2,457 | 27.9% | $43,316 | $2,288,203 |
| 36 | 77076 | Houston | 6,239 | 1,741 | 27.9% | $57,270 | $2,143,703 |
| 37 | 77092 | Houston | 5,837 | 1,628 | 27.9% | $69,118 | $2,419,272 |
| 38 | 77562 | Highlands | 3,049 | 846 | 27.7% | $68,344 | $1,243,125 |
| 39 | 77057 | Houston | 4,300 | 1,183 | 27.5% | $169,884 | $4,320,938 |
| 40 | 77050 | Houston | 934 | 257 | 27.5% | $64,213 | $354,812 |
| 41 | 77015 | Houston | 11,088 | 3,004 | 27.1% | $42,552 | $2,748,299 |
| 42 | 77021 | Houston | 7,386 | 2,004 | 27.1% | $71,458 | $3,078,841 |
| 43 | 77020 | Houston | 6,970 | 1,871 | 26.8% | $50,896 | $2,047,389 |
| 44 | 77074 | Houston | 4,993 | 1,331 | 26.7% | $46,780 | $1,338,705 |
| 45 | 77004 | Houston | 7,154 | 1,905 | 26.6% | $81,943 | $3,356,184 |
| 46 | 77051 | Houston | 5,354 | 1,426 | 26.6% | $47,003 | $1,441,081 |
| 47 | 77013 | Houston | 2,519 | 669 | 26.6% | $37,045 | $532,846 |
| 48 | 77018 | Houston | 10,451 | 2,773 | 26.5% | $116,211 | $6,928,463 |
| 49 | 77401 | Bellaire | 5,939 | 1,570 | 26.4% | $182,296 | $6,153,431 |
| 50 | 77032 | Houston | 1,757 | 462 | 26.3% | $47,381 | $470,645 |
| 51 | 77077 | Houston | 10,776 | 2,810 | 26.1% | $78,219 | $4,725,613 |
| 52 | 77502 | Pasadena | 8,082 | 2,110 | 26.1% | $37,082 | $1,682,239 |
| 53 | 77081 | Houston | 1,004 | 258 | 25.7% | $100,614 | $558,108 |
| 54 | 77016 | Houston | 10,309 | 2,642 | 25.6% | $44,207 | $2,511,094 |
| 55 | 77055 | Houston | 9,052 | 2,321 | 25.6% | $137,082 | $6,840,617 |
| 56 | 77339 | Humble | 10,226 | 2,541 | 24.8% | $51,473 | $2,812,063 |
| 57 | 77025 | Houston | 6,352 | 1,560 | 24.6% | $129,935 | $4,358,028 |
| 58 | 77043 | Houston | 6,495 | 1,582 | 24.4% | $80,507 | $2,738,311 |
| 59 | 77503 | Pasadena | 5,321 | 1,264 | 23.8% | $44,544 | $1,210,550 |
| 60 | 77091 | Houston | 6,588 | 1,539 | 23.4% | $65,885 | $2,180,054 |
| 61 | 77007 | Houston | 13,149 | 3,066 | 23.3% | $111,421 | $7,344,789 |
| 62 | 77532 | Crosby | 10,978 | 2,527 | 23% | $72,423 | $3,934,829 |
| 63 | 77080 | Houston | 8,836 | 2,024 | 22.9% | $76,823 | $3,343,046 |
| 64 | 77069 | Houston | 4,983 | 1,134 | 22.8% | $59,399 | $1,448,228 |
| 65 | 77530 | Channelview | 7,087 | 1,611 | 22.7% | $47,131 | $1,632,484 |
| 66 | 77034 | Houston | 6,940 | 1,576 | 22.7% | $30,807 | $1,043,864 |
| 67 | 77060 | Houston | 3,630 | 825 | 22.7% | $58,104 | $1,030,630 |
| 68 | 77571 | La Porte | 7,446 | 1,657 | 22.3% | $46,125 | $1,643,252 |
| 69 | 77484 | Waller | 1,165 | 256 | 22% | $96,932 | $533,515 |
| 70 | 77536 | Deer Park | 9,332 | 2,005 | 21.5% | $40,959 | $1,765,640 |
| 71 | 77071 | Houston | 5,821 | 1,223 | 21% | $45,581 | $1,198,550 |
| 72 | 77088 | Houston | 14,245 | 2,977 | 20.9% | $40,570 | $2,596,733 |
| 73 | 77003 | Houston | 3,420 | 711 | 20.8% | $67,498 | $1,031,815 |
| 74 | 77504 | Pasadena | 3,777 | 781 | 20.7% | $53,640 | $900,701 |
| 75 | 77058 | Houston | 2,568 | 530 | 20.6% | $56,507 | $643,897 |
| 76 | 77345 | Kingwood | 8,591 | 1,721 | 20% | $58,355 | $2,159,250 |
| 77 | 77070 | Houston | 11,704 | 2,301 | 19.7% | $40,872 | $2,022,011 |
| 78 | 77068 | Houston | 3,259 | 638 | 19.6% | $56,361 | $773,106 |
| 79 | 77040 | Houston | 10,707 | 2,078 | 19.4% | $44,147 | $1,972,390 |
| 80 | 77523 | Baytown | 382 | 74 | 19.4% | $63,035 | $100,289 |
| 81 | 77521 | Baytown | 14,524 | 2,809 | 19.3% | $51,170 | $3,090,338 |
| 82 | 77505 | Pasadena | 6,425 | 1,218 | 19% | $43,149 | $1,129,945 |
| 83 | 77586 | Seabrook | 3,863 | 733 | 19% | $81,512 | $1,284,591 |
| 84 | 77065 | Houston | 7,741 | 1,453 | 18.8% | $43,118 | $1,347,012 |
| 85 | 77075 | Houston | 8,116 | 1,513 | 18.6% | $56,350 | $1,833,050 |
| 86 | 77036 | Houston | 5,042 | 936 | 18.6% | $37,785 | $760,391 |
| 87 | 77089 | Houston | 14,969 | 2,740 | 18.3% | $31,688 | $1,866,784 |
| 88 | 77041 | Houston | 9,647 | 1,735 | 18% | $50,577 | $1,886,648 |
| 89 | 77031 | Houston | 2,820 | 508 | 18% | $47,225 | $515,801 |
| 90 | 77048 | Houston | 5,842 | 1,041 | 17.8% | $33,238 | $743,925 |
| 91 | 77450 | Katy | 13,536 | 2,399 | 17.7% | $48,579 | $2,505,659 |
| 92 | 77357 | New Caney | 333 | 59 | 17.7% | $80,242 | $101,787 |
| 93 | 77045 | Houston | 8,496 | 1,478 | 17.4% | $30,086 | $956,051 |
| 94 | 77365 | Porter | 956 | 165 | 17.3% | $50,504 | $179,165 |
| 95 | 77090 | Houston | 4,895 | 841 | 17.2% | $42,669 | $771,533 |
| 96 | 77099 | Houston | 7,041 | 1,199 | 17% | $29,339 | $756,325 |
| 97 | 77062 | Houston | 6,071 | 1,020 | 16.8% | $43,963 | $964,115 |
| 98 | 77072 | Houston | 10,806 | 1,793 | 16.6% | $27,241 | $1,050,148 |
| 99 | 77086 | Houston | 5,971 | 994 | 16.6% | $73,116 | $1,562,565 |
| 100 | 77598 | Webster | 2,390 | 396 | 16.6% | $33,120 | $281,989 |
| 101 | 77082 | Houston | 10,131 | 1,661 | 16.4% | $43,908 | $1,568,042 |
| 102 | 77094 | Houston | 3,015 | 492 | 16.3% | $80,973 | $856,534 |
| 103 | 77064 | Houston | 11,840 | 1,920 | 16.2% | $33,685 | $1,390,517 |
| 104 | 77379 | Spring | 24,864 | 3,984 | 16% | $55,349 | $4,741,011 |
| 105 | 77389 | Spring | 12,218 | 1,950 | 16% | $96,639 | $4,051,599 |
| 106 | 77095 | Houston | 19,610 | 3,109 | 15.9% | $33,236 | $2,221,618 |
| 107 | 77085 | Houston | 3,637 | 579 | 15.9% | $42,395 | $527,762 |
| 108 | 77059 | Houston | 5,954 | 939 | 15.8% | $54,588 | $1,102,057 |
| 109 | 77377 | Tomball | 14,244 | 2,226 | 15.6% | $93,319 | $4,466,159 |
| 110 | 77049 | Houston | 9,296 | 1,438 | 15.5% | $35,442 | $1,095,779 |
| 111 | 77546 | Friendswood | 6,699 | 1,035 | 15.5% | $34,383 | $765,125 |
| 112 | 77338 | Humble | 10,648 | 1,616 | 15.2% | $36,122 | $1,255,053 |
| 113 | 77429 | Cypress | 27,359 | 4,133 | 15.1% | $62,969 | $5,595,409 |
| 114 | 77083 | Houston | 9,173 | 1,385 | 15.1% | $27,682 | $824,316 |
| 115 | 77038 | Houston | 5,816 | 875 | 15% | $37,718 | $709,570 |
| 116 | 77084 | Houston | 27,189 | 4,057 | 14.9% | $28,930 | $2,523,466 |
| 117 | 77066 | Houston | 9,443 | 1,409 | 14.9% | $33,572 | $1,017,036 |
| 118 | 77396 | Humble | 13,638 | 1,996 | 14.6% | $44,250 | $1,898,976 |
| 119 | 77581 | Pearland | 1,477 | 216 | 14.6% | $62,839 | $291,828 |
| 120 | 77047 | Houston | 10,032 | 1,459 | 14.5% | $29,761 | $933,582 |
| 121 | 77388 | Spring | 14,945 | 2,156 | 14.4% | $40,395 | $1,872,502 |
| 122 | 77346 | Humble | 24,351 | 3,415 | 14% | $43,485 | $3,192,792 |
| 123 | 77044 | Houston | 15,317 | 2,079 | 13.6% | $51,136 | $2,285,725 |
| 124 | 77067 | Houston | 5,453 | 688 | 12.6% | $27,999 | $414,164 |
| 125 | 77375 | Tomball | 19,979 | 2,497 | 12.5% | $70,993 | $3,811,308 |
| 126 | 77433 | Cypress | 39,705 | 4,940 | 12.4% | $56,999 | $6,053,966 |
| 127 | 77373 | Spring | 23,153 | 2,853 | 12.3% | $34,586 | $2,121,511 |
| 128 | 77493 | Katy | 21,487 | 2,439 | 11.4% | $49,376 | $2,589,204 |
| 129 | 77447 | Hockley | 9,861 | 1,067 | 10.8% | $61,005 | $1,399,495 |
| 130 | 77449 | Katy | 36,476 | 3,867 | 10.6% | $25,695 | $2,136,345 |
| 131 | 77073 | Houston | 9,894 | 977 | 9.9% | $24,437 | $513,315 |
| 132 | 77014 | Houston | 6,279 | 604 | 9.6% | $26,126 | $339,282 |
| 133 | 77054 | Houston | 868 | 79 | 9.1% | $32,629 | $55,421 |
Find your ZIP above? That still isn't your answer.
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How this is calculated
For each HarrisCounty ZIP code we compute the typical market value per square foot from the county appraisal district's own public records. A home is counted as over-assessed when its market value sits more than 10% above what that ZIP's typical dollar-per-square-foot predicts for a home of its size.
A ZIP code is only ranked if it has at least 50 analyzed homes. Annual overpayment applies Harris County's average effective tax rate of 2.31% to the assessed gap; real bills vary by school district, city, and MUD.
This ZIP-level screen is a different, coarser test than the matched-comparables analysis behind our statewide Texas study, which compares each home to specific comparable properties in its own appraisal neighborhood. The two produce different county totals on purpose, and should not be combined into one figure.
Full detail on comp selection, thresholds and data sources is on our methodology page. Data as of 2026-07-27. Journalists and researchers: the underlying county and ZIP tables are free to download and cite from our data page.
Common questions
Which ZIP code in Harris County has the most over-assessed homes?
77042 (Houston) has the highest share: 35.6% of its 4,012 analyzed homes are assessed above what comparable homes of similar size in the same ZIP are assessed at. Across all 133 ranked Harris County ZIP codes, 221,107 of 1,099,363 homes are flagged, or 20.1%.
How many homes does each ZIP code ranking include?
Only ZIP codes with at least 50 analyzed homes are ranked, so no position rests on a handful of properties. In Harris County the smallest ranked ZIP has 333 homes and the median has 6,499. The homes-analyzed count is shown for every row.
Does a high ZIP code ranking mean my Harris County home is over-assessed?
No. The ranking is a ZIP-level rate, not a verdict on any individual property. A home in a low-ranked ZIP can still be over-assessed, and most homes in the top-ranked ZIP are not. The only way to know is to compare your specific home against its own comparables, which our free check does in about 30 seconds.
What does the annual overpayment figure mean?
It applies Harris County's average effective tax rate of 2.31% to the assessed gap on flagged homes. Real bills vary by school district, city, and MUD, so treat it as an estimate of scale rather than a quote for any one home.
When can I protest my Harris County property taxes?
The Texas protest deadline is May 15, or 30 days after your appraisal notice is mailed, whichever is later, under Texas Tax Code 41.44. Appraisal districts mail 2027 notices in late March and April. An over-assessment carries forward every year until you correct it.
Related
- Harris County property tax protest guide — deadlines, forms, and how the hearing works.
- Texas overpayment leaderboard — the top ZIP codes statewide by total annual overpayment.
- Most over-assessed ZIP codes in Dallas County — 81 ZIP codes ranked.
- The Texas over-assessment study — all 14 counties, matched-comparables method.
- Cite this data — downloadable CSVs, an embeddable chart, and our citation format.
221,107 Harris County homes are overpaying.
An over-assessment repeats every year until someone corrects it. Check your address free. If there is a gap, get a signature-ready protest kit with your comparables for a flat $49, one time, with a 30-day refund.
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