Curb CanopyData-only cityEquity data available. Programs, species, and local info need community input.
Share local info →What is the Tree Equity Score?
American Forests' Tree Equity Score combines tree canopy coverage, surface temperature, income, employment, race, age, and health data to identify where trees are needed most. Scores range from 0 to 100, and areas below 60 are priority for investment.
View San Marcos on Tree Equity Score ↗82.9
TES Score / 100
28.8%
Current Canopy
30.0%
Canopy Goal
8.3%
Canopy Gap
Current: 28.8%Goal: 30.0%
Current canopy
Gap to goal
Environmental Benefits
Carbon Sequestered
17.4K tons CO₂/yr
+4.9K tons if gap closed
Stormwater Intercepted
123.8M gal/yr
Avg Tree Shade at Noon
32.7%
Canopy Area
17.0 km²
of 56.2 km² total
Estimated using i-Tree urban canopy rates. Methodology ↗
Equity Indicators
These factors show how tree canopy gaps overlap with social and environmental vulnerabilities.
1930s Redlining
0.0%
Federal redlining maps from the 1930s didn't cover this area. Only about 239 cities were mapped, mostly major metros.
Environmental Justice
44.4%
of neighborhoods are classified as overburdened by the White House's Climate & Economic Justice Screening Tool, meaning they face outsized pollution, poverty, or health risks. Trees help, but they're not the whole fix.
Heat Island Effect
+0.4°F
hotter than surrounding areas on average. Pavement absorbs heat, trees block it. That's the whole pitch.
People in the Data
68,601
people live across the 45 Census block groups we analyzed. That's who these numbers represent.
Data last updated: Feb 2026
Help build the San Marcos page
We have Tree Equity data but this city is missing free tree programs, local nurseries, native species info, and community partners. Your local knowledge turns a data page into something people can actually use.
Share what you know →Local Partners
Data only
Somewhere in San Marcos, TX, a city employee has a free tree program form in a filing cabinet. We just need to find that person.
Know a local tree program? Tell us →