Land Measurement: How to Read Legal Descriptions, Township & Range, and Survey Coordinates
- Craig Kaiser
- 2 days ago
- 5 min read
Pull up almost any rural property deed and you'll run into a string of letters and numbers that looks more like a code than a description. Although that string can be intimidating, it's actually a precise and standardized system that's been used to locate land for over two centuries. Knowing how to read it is one of the most valuable due diligence skills you can have, whether you're buying raw acreage, confirming boundaries before a sale, or just trying to understand exactly what you own. This guide breaks down legal descriptions, township and range, quarter-section acreage, and survey coordinates in plain English.
What Is a Legal Description of a Property?
A legal description is the official written description used to identify a specific parcel of real property in deeds, titles, mortgages, and other legal documents. Unlike a street address, which can change or not exist at all for vacant land, a legal description is meant to identify one parcel, and only that parcel, in a way that holds up legally and stays accurate over time.
There are three common types of legal descriptions used across the U.S.:
Metes and bounds: Describes a parcel's perimeter starting from a fixed "point of beginning," then traces a series of compass bearings and distances around the boundary until it returns to that same point.
Lot and block: Common in platted subdivisions, this references a lot number and block number tied to a recorded plat map on file with the county.
Government (rectangular) survey: Used across roughly 30 states, mostly in the West, Midwest, and South, this method locates land using the Public Land Survey System (PLSS) - the township, range, and section system.
Township: A 6-mile by 6-mile square (36 square miles or 23,040 acres)
Range: Measures east or west from a principal meridian
Section: One of 36 one-mile-square sections within a township (640 acres)
You'll find your property's legal description on your deed, title report, or county tax record. If you're buying land, a title company or real estate attorney should confirm its accuracy before closing; this guide is meant to help you understand it, not replace that review.
How to Find Your Property's Township, Range, and Section
If your property is described using the government survey method, the township, range, and section numbers will appear directly in the legal description on your deed or title documents. You can usually also find them within public property assessor data on your county assessor's or recorder's website, on your property tax bill, or by looking up your parcel number (often called an APN, or Assessor's Parcel Number).
Not every state uses PLSS, though. The original thirteen colonies, Texas, and a handful of other states were surveyed before the system existed and rely primarily on metes-and-bounds descriptions instead. So if you don't see a township and range number on your documents, that's likely why.
The fastest way to find this information today is to skip the paperwork entirely. With a free LandApp account, you can click on any parcel on our nationwide map and instantly pull up its acreage, Assessor's Parcel Number (APN), and parcel ID for unlimited properties, at no cost.
How to Read Township, Range, and Section
The Public Land Survey System divides land using two reference lines: a principal meridian (running north-south) and a baseline (running east-west). There are 37 principal meridians across the U.S., each acting as the origin point for surveys in its region.
From that origin, land is divided into townships, which are squares roughly six miles by six miles. These are identified by how many rows north or south of the baseline they sit (the township number) and how many columns east or west of the meridian they sit (the range number). For example, "Township 3 North, Range 5 West," often abbreviated T3N, R5W, describes a township three rows north of the baseline and five columns west of the meridian.
Each township is then divided into 36 sections, each roughly one square mile. Sections are numbered 1 through 36 in a back-and-forth pattern starting in the northeast corner: numbering runs west across the top row (1 through 6), drops down a row and reverses direction (7 through 12), and continues snaking row by row until it ends at section 36 in the southeast corner.
Here’s a simple step-by-step guide for reading township, range, and sections:
Find the principal meridian + baseline
Read the Township (T)
Read the Range (R )
Find the section
Go smaller if fractions are included to see exactly which piece of the section you own
So a full description like "Section 14, T3N, R5W" tells you exactly how to locate the parcel: find the correct principal meridian for the region, count three townships north of the baseline and five ranges west of the meridian to locate the right township, then find section 14 within that township's 6x6 grid. Once you know the pattern, it reads the same way no matter where in the country it's used.
How to Read Land Survey Coordinates
"Survey coordinates" can mean a few different things depending on which document you're looking at, and that's often where the confusion starts.
In a metes-and-bounds legal description, you'll typically see bearings and distances rather than coordinates. For example, "N45°30'15"E, 150.25 feet" means the property line runs 45 degrees, 30 minutes, and 15 seconds east of due north, for a length of 150.25 feet. Professional surveyors also work with State Plane Coordinates or UTM coordinates, which assign precise X/Y positions within a specific regional zone, typically expressed in feet or meters rather than degrees.
The coordinates most people are familiar with, like GPS latitude and longitude (such as 39.7392, -104.9903 ) are useful for general mapping and pinpointing a property's approximate location, and they're what detailed parcel information tools like LandApp use to show a parcel on a map. It's worth knowing, though, that GPS coordinates aren't automatically interchangeable with the coordinate system used in an official survey. For anything involving a boundary dispute, building permit, or land sale, the bearings, distances, and monuments set by a licensed surveyor are the controlling reference - not a phone's GPS reading.
Find Your Property's Measurements and Boundaries for Free on LandApp
You don't need a surveying background to make sense of your land. LandApp puts the practical side of all this - boundaries, acreage, and parcel data - right at your fingertips, nationwide, for free.
Download the free LandApp app or go to our map to view property lines for any parcel in the country at no cost. With a free account, click on any parcel to instantly see its acreage, APN, and parcel ID for unlimited properties. You can also see Township, Range, and Section lines directly on the map.
And when you need to know who actually owns the land next door, or want to research ownership patterns across an entire region, LandApp Pro unlocks nationwide ownership maps and assessor data to take your research even further.
