McMullen County, TX Elevation & Topographic Map
Elevation
690 ft 210 m550 ft 170 m480 ft 150 m350 ft 105 m210 ft 65 m140 ft 45 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
How to use this mapviews, tools and data
- Elevation
- Ground colored by height from green (lowest) to white (highest), with contour lines every 40–500 ft (USGS data).
- Satellite
- A 2016 satellite photo at 33 ft (10 m) detail; contours off.
- 3D
- Tilt and turn the terrain; hills are raised 1.5×, or set ×1 for true height.
- Click or tap anywhere
- The exact elevation of that spot in ft and m.
- Measure
- Pick two points for the climb, descent and grade along a straight line.
- County area
- Fades everything outside the official county boundary (US Census).
Elevation Data
McMullen County averages about 320 ft (100 m) above sea level across all its land. Its ground runs from 140 ft on the east side to 690 ft on the south side.
Average elevation
320 ft 100 m
all land inside the county
Highest
690 ft 210 m
on the south side
Lowest
140 ft 45 m
on the east side
McMullen County spans about 550 ft of height, so no single spot tells the whole story. The ruler shows where most of its land lies, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Average of all land | 320 ft100 m |
| Highest point Inside the county, on the south side | 690 ft210 m |
| Lowest point Inside the county, on the east side | 140 ft45 m |
Elevation profile, south to north
41 mi south to north through Tilden.
Topographic Map
- Location
- County in Texas, United States
- Population
- 565 2024 est.
- Land area
- 1,139.8 sq mi + 17.0 sq mi water
- Density
- 0.5 per sq mi
- Time zone
- Central UTC−6 / −5
- Landform region
- Coastal Plain
- Drains to
- Gulf of America
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Duval County490 ft
- Atascosa County430 ft
- La Salle County420 ft
- McMullen County320 ft
- Live Oak County250 ft
Rankings by average elevation
- Counties in Texas198th highest of 254
- Counties in the United States2,586th highest of 3,151
Peaks and hills highest inside
- Loma Pinta620 ft
- Loma Alta, McMullen County610 ft
- Devils Center Table520 ft
- LaChusa Hill520 ft
- Kings Hills480 ft
The one town in McMullen County
- Tilden250 ft
How we measure
- Average: every USGS 3DEP bare-earth cell of land inside the Census county boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 1 arc-second (≈100 ft, 30 m) grid. Land means the boundary minus Census area water.
- Highest and lowest: the highest land cell. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
- Nearby Places: neighboring counties and rankings use each one's average elevation, on its own grid, the same figure its page shows. Peaks and hills: the highest summits inside the county with at least 980 ft (300 m) of prominence, then the highest federal (GNIS) summits inside it when there are fewer than 5; each is the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a usable survey mark sits within 160 ft (50 m) of it (shown as published).
- Towns: each town's typical elevation (population-weighted median of its own 2020 blocks at 1 arc-second); a town is listed when any of its 2020 residents live in the county.
- Rounding: computed heights are rounded to 10 ft (5 m), or to 1 ft (1 m) under 100 ft; 3DEP is good to about a meter, not a foot. Published figures (NGS survey heights) are shown as their publisher gives them.
- Datum: North American Vertical Datum of 1988 (NAVD 88). NGS plans to replace NAVD 88 with a new datum (NAPGD2022); heights will then shift slightly.
- Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (TIGER boundaries and water, 2020 blocks, 2024 population estimates, county adjacency); NOAA NGS survey heights; BTS time zones. All public domain.