Portland, TX Elevation & Topographic Map
Elevation
56 ft 17 m42 ft 13 m35 ft 11 m21 ft 6 m7 ft 2 m0 ft 0 m
Contours every 100 ft, bold every 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.
- City area
- Fades everything outside the official city limits (US Census).
Elevation Data
Portland sits at about 34 ft (10 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
34 ft 10 m
most residents: 28–37 ft
Lowest
0 ft 0 m
at sea level on Nueces Bay
Highest
56 ft 17 m
on the west side
Average
33 ft 10 m
all land inside city limits
Portland spans about 56 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.
3% of Portland's land lies below the average daily high tide (MHHW, NOAA), and 3% lies less than 3 ft above it. Check flood zones on FEMA's map
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 34 ft10 m |
| Highest point Inside city limits, on the west side | 56 ft17 m |
| Lowest point Where the land meets Nueces Bay | 0 ft0 m |
| Town center USGS map point for Portland | 30 ft9 m |
| Airport (CRP) FAA airport elevation, the highest point of its runways, 9.4 mi southwest of the city limits | 46 ft14 m |
| Average of all land | 33 ft10 m |
Elevation profile, south to north
4.3 mi south to north through the town center.
Topographic Map
- Location
- City in San Patricio County, Texas, United States
- Population
- 20,725 2024 est.
- Land area
- 12.4 sq mi + 3.0 sq mi water
- Density
- 1,678 per sq mi
- Coordinates
- 27.8772° N, 97.3239° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Coastal Plain
- Drains to
- Gulf of America
- Airport
- Corpus Christi International (CRP) 46 ft
- ZIP codes 3
- 78359 78374 78390
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Loma Linda55 ft
- Taft Southwest54 ft
- Taft48 ft
- Portland34 ft
- Gregory29 ft
- Corpus Christi26 ft
- Tradewinds18 ft
- Aransas Pass16 ft
- Ingleside on the Bay16 ft
- Ingleside15 ft
- Falman11 ft
Rankings by typical elevation
- Towns in Texas1,724th highest of 1,861
- Towns in San Patricio County19th highest of 25
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the city limits, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
- Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census city limits (TIGER, Jan 1 2026).
- Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 0 ft at 27.8829° N, 97.3462° W, is in such a hollow or patch and is not counted; this coastal land's lowest point is sea level on the coast.
- Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) 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).
- 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 (FAA airport elevation, 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 (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones; NOAA tidal surfaces (MHHW). All public domain.