Zip Code: 78666 (San Marcos, Texas) - Trend of Zillow Home Value Index (ZHVI) for All Homes (SFR, Condo/Co-op), Smooth and Seasonally Adjusted (Zillow)

Updated on March 22, 2026.

According to data from Zillow.com, the smoothed and seasonally adjusted Zillow home value index (ZHVI) for All Homes (SFR, Condo/Co-op) in the 78666 Zip Code (San Marcos, Texas) in February 2026 was $314,156.297. The month over month percentage change (MoM) was -0.21%, and the year over year percentage change (YoY) was -4.28%.

The chart below shows the trend of the smoothed and seasonally adjusted ZHVI for the 78666 zip code (San Marcos, Texas). The table below shows the trend of the smoothed and seasonally adjusted ZHVI, and the MoM and YoY percentage changes for the 78666 zip code (San Marcos, Texas).

You can see similar information for other Texas zip codes, and for Texas.

Note: Zillow Home Value Index (ZHVI) is a measure of the typical home value and market changes across a given region and housing type. It reflects the typical value for homes in the 35th to 65th percentile range.

Data Source: Zillow.
Zip Code: 78666 (San Marcos, Texas) - Trend of Zillow Home Value Index (ZHVI), Smooth and Seasonally Adjusted ($)
Zip Code: 78666 (San Marcos, Texas) - Trend of Zillow Home Value Index (ZHVI), Smooth and Seasonally Adjusted
1 – 10 of 134
Month ZHVI ($) MoM Perc. Change (%) YoY Perc. Change (%)
Jan 2015 186381.01922797182 0.81 9.37
Feb 2015 188059.662677821 0.90 9.31
Mar 2015 189670.2412579589 0.86 9.20
Apr 2015 191185.13106970466 0.80 9.25
May 2015 192808.1472765969 0.85 9.11
Jun 2015 194461.7699671814 0.86 8.97
Jul 2015 196102.97297695465 0.84 8.75
Aug 2015 197553.8997197007 0.74 8.72
Sep 2015 198786.93685606413 0.62 8.87
Oct 2015 199986.03471345094 0.60 9.18
Nov 2015 201058.18407671052 0.54 9.39
Dec 2015 202693.74674335276 0.81 9.64
Jan 2016 204428.8856559487 0.86 9.68
Feb 2016 205846.65747710597 0.69 9.46
Mar 2016 206420.66574309414 0.28 8.83
Apr 2016 207001.70745923417 0.28 8.27
May 2016 207857.87046589018 0.41 7.81
Jun 2016 209166.26644678923 0.63 7.56
Jul 2016 210393.40086944136 0.59 7.29
Aug 2016 211978.46415112502 0.75 7.30
Sep 2016 213498.27893032317 0.72 7.40
Oct 2016 214975.51394595104 0.69 7.50
Nov 2016 216235.30360206042 0.59 7.55
Dec 2016 217625.21719786117 0.64 7.37
Jan 2017 218974.8083018381 0.62 7.12
Feb 2017 220099.3578729685 0.51 6.92
Mar 2017 221219.7525933061 0.51 7.17
Apr 2017 222236.23886604107 0.46 7.36
May 2017 223058.81691041496 0.37 7.31
Jun 2017 223596.85293835565 0.24 6.90
Jul 2017 224219.10338341992 0.28 6.57
Aug 2017 225154.61720040374 0.42 6.22
Sep 2017 226097.05443404798 0.42 5.90
Oct 2017 227006.78518003298 0.40 5.60
Nov 2017 227769.51804961512 0.34 5.33
Dec 2017 228727.63892800978 0.42 5.10
Jan 2018 229591.99813244355 0.38 4.85
Feb 2018 230173.45151707204 0.25 4.58
Mar 2018 230811.27122056438 0.28 4.34
Apr 2018 231332.3608717248 0.23 4.09
May 2018 232021.25363479843 0.30 4.02
Jun 2018 232723.8921436197 0.30 4.08
Jul 2018 233704.54121080236 0.42 4.23
Aug 2018 234580.77974695456 0.38 4.19
Sep 2018 234824.7755760751 0.10 3.86
Oct 2018 234619.4078643158 -0.09 3.35
Nov 2018 234620.86855222218 0.00 3.01
Dec 2018 235352.0252440779 0.31 2.90
Jan 2019 236859.09075563133 0.64 3.17
Feb 2019 238449.32145410893 0.67 3.60
Mar 2019 240041.74629763493 0.67 4.00
Apr 2019 240935.80555106234 0.37 4.15
May 2019 241654.332179822 0.30 4.15
Jun 2019 241890.29757934497 0.10 3.94
Jul 2019 242124.43923208374 0.10 3.60
Aug 2019 242408.52276042654 0.12 3.34
Sep 2019 242943.75710893676 0.22 3.46
Oct 2019 243668.28094137085 0.30 3.86
Nov 2019 244658.3293949978 0.41 4.28
Dec 2019 245976.73538889425 0.54 4.51
Jan 2020 247460.52379935808 0.60 4.48
Feb 2020 248821.51574267505 0.55 4.35
Mar 2020 249966.94658706407 0.46 4.14
Apr 2020 251083.42946056448 0.45 4.21
May 2020 251607.27777974945 0.21 4.12
Jun 2020 252308.54645483044 0.28 4.31
Jul 2020 253654.02489089916 0.53 4.76
Aug 2020 256186.40230696034 1.00 5.68
Sep 2020 259478.5042026618 1.29 6.81
Oct 2020 262855.37509634666 1.30 7.87
Nov 2020 266104.3852604757 1.24 8.77
Dec 2020 269090.43237305095 1.12 9.40
Jan 2021 271971.0905014491 1.07 9.90
Feb 2021 275848.9144826343 1.43 10.86
Mar 2021 281511.5116077669 2.05 12.62
Apr 2021 289759.55755082 2.93 15.40
May 2021 300152.36853741674 3.59 19.29
Jun 2021 311140.6208185517 3.66 23.32
Jul 2021 320426.23969833966 2.98 26.32
Aug 2021 326824.5412613016 2.00 27.57
Sep 2021 330329.4669084649 1.07 27.31
Oct 2021 333163.22258010705 0.86 26.75
Nov 2021 336809.05379632727 1.09 26.57
Dec 2021 341809.0267864309 1.49 27.02
Jan 2022 348733.7201674783 2.03 28.23
Feb 2022 356559.09430202487 2.24 29.26
Mar 2022 365741.2386613143 2.58 29.92
Apr 2022 374714.317001264 2.45 29.32
May 2022 382747.89662377996 2.14 27.52
Jun 2022 388387.5200822195 1.47 24.83
Jul 2022 389507.8347805738 0.29 21.56
Aug 2022 387272.45737715164 -0.57 18.50
Sep 2022 382807.195249083 -1.15 15.89
Oct 2022 378370.50815428846 -1.16 13.57
Nov 2022 373658.10279247165 -1.25 10.94
Dec 2022 368614.03421760467 -1.35 7.84
Jan 2023 363724.8514929631 -1.33 4.30
Feb 2023 359079.32650910266 -1.28 0.71
Mar 2023 355338.30095843156 -1.04 -2.84
Apr 2023 352837.47431944794 -0.70 -5.84
May 2023 351996.9684607715 -0.24 -8.03
Jun 2023 351984.4384537724 0.00 -9.37
Jul 2023 351608.3341333065 -0.11 -9.73
Aug 2023 350727.9550730418 -0.25 -9.44
Sep 2023 349367.0083250901 -0.39 -8.74
Oct 2023 347868.2892365013 -0.43 -8.06
Nov 2023 346339.51451930474 -0.44 -7.31
Dec 2023 344227.89999730216 -0.61 -6.62
Jan 2024 342648.4985560428 -0.46 -5.79
Feb 2024 341233.5860969306 -0.41 -4.97
Mar 2024 340431.9096570267 -0.23 -4.19
Apr 2024 339603.1675715384 -0.24 -3.75
May 2024 338257.6956859319 -0.40 -3.90
Jun 2024 336891.41311745514 -0.40 -4.29
Jul 2024 335374.2649461621 -0.45 -4.62
Aug 2024 333968.75720592163 -0.42 -4.78
Sep 2024 332904.0011629319 -0.32 -4.71
Oct 2024 331942.7616867181 -0.29 -4.58
Nov 2024 331116.89819634636 -0.25 -4.39
Dec 2024 330129.941641775 -0.30 -4.10
Jan 2025 329077.93080596474 -0.32 -3.96
Feb 2025 328213.4573041666 -0.26 -3.82
Mar 2025 326804.2261943018 -0.43 -4.00
Apr 2025 325103.782078147 -0.52 -4.27
May 2025 322774.7389068548 -0.72 -4.58
Jun 2025 320493.6928371667 -0.71 -4.87
Jul 2025 318315.2069449488 -0.68 -5.09
Aug 2025 316943.4739712334 -0.43 -5.10
Sep 2025 316308.43615842337 -0.20 -4.99
Oct 2025 316026.5435949155 -0.09 -4.79
Nov 2025 315740.85540506925 -0.09 -4.64
Dec 2025 315273.414531012 -0.15 -4.50
Jan 2026 314825.69230535557 -0.14 -4.33
Feb 2026 314156.2971172396 -0.21 -4.28