Mastering the Government Rectangular Survey System for the Kansas Exam

Last updated: April 2026

If you are preparing for the Kansas real estate licensing exam, one of the most critical foundational concepts you must master is how land is legally measured and identified. Among the various methods of legal land description, the Government Rectangular Survey System—also known as the Public Land Survey System (PLSS)—is the primary method used across the state of Kansas. Understanding how to read, interpret, and calculate acreage using this system is not just a test requirement; it is an essential daily skill for any Kansas real estate professional.

In this guide, we will break down the mechanics of the Government Rectangular Survey System, explore its specific application in Kansas, and provide practical formulas to ensure you can confidently tackle any land description question on your exam.

What is the Government Rectangular Survey System?

Established by the Land Ordinance of 1785, the Government Rectangular Survey System was created to standardize the surveying and sale of land acquired by the United States government. Unlike the older "metes and bounds" system—which relies on physical landmarks, distances, and angles (and is common in the original 13 colonies)—the rectangular survey system uses a precise, mathematically based grid.

This grid system divides land into a series of rectangles, allowing for accurate, uniform, and easily communicable legal descriptions. For a contract or deed to be legally enforceable under Kansas law, it must contain a legally sufficient description of the property. A mere street address is not enough to satisfy the legal requirements of a deed or the Kansas contract essentials and elements.

The Kansas Connection: The Sixth Principal Meridian

To understand the grid, you must first understand its starting points. The entire system is based on two sets of intersecting lines:

Principal Meridians: Lines running North and South.
Base Lines: Lines running East and West.

For the Kansas real estate exam, you must know that almost all land in Kansas is surveyed from the Sixth Principal Meridian (6th PM). Established in 1855, the 6th PM runs vertically straight through the state, passing near Wichita. The corresponding Base Line for Kansas is the 40th parallel north, which conveniently forms the geographic border between Kansas and Nebraska.

Every piece of land surveyed under the PLSS in Kansas is measured in relation to the intersection of the 6th Principal Meridian and this Base Line.

Breaking Down the Grid: Townships and Sections

Once the Principal Meridian and Base Line are established, the land is further divided into a checkerboard grid using Range Lines and Township Lines.

Ranges and Tiers

Range Lines run North-South, parallel to the Principal Meridian, spaced 6 miles apart. The vertical columns they create are called Ranges.

Township Lines run East-West, parallel to the Base Line, spaced 6 miles apart. The horizontal rows they create are called Tiers (or simply Township rows).

The Township

The intersection of a Range and a Tier creates a Township. A standard township is a square that is 6 miles by 6 miles, meaning it contains exactly 36 square miles.

The Section

Because a 36-square-mile township is too large for most real estate transactions, it is subdivided into 36 smaller squares called Sections. You must memorize the following facts for your exam:

There are 36 sections in a township.
Each section is 1 mile by 1 mile (1 square mile).
One section contains exactly 640 acres. (This is a highly testable number!)

Sections are numbered 1 through 36 in a specific "snake-like" (boustrophedonic) pattern. Section 1 is always in the top right (Northeast) corner of the township. The numbering moves left to Section 6, drops down to Section 7, moves right to Section 12, and continues this pattern until it ends with Section 36 in the bottom right (Southeast) corner.

Calculating Acreage: Essential Math for the Kansas Exam

One of the most common math questions on the Kansas real estate exam asks you to calculate the acreage of a parcel of land based on its rectangular survey description. Because a full section is 640 acres, land is frequently sold in fractions of a section (halves and quarters).

The "Divide by the Denominators" Rule

To find the total acreage of a legally described parcel, simply take 640 and divide it by the denominators of the fractions in the description.

Example 1: "The SW 1/4 of the NE 1/4 of Section 12."

Start with 640 acres.
Divide by 4 (for the NE 1/4): 640 ÷ 4 = 160 acres.
Divide by 4 again (for the SW 1/4): 160 ÷ 4 = 40 acres.

Answer: 40 acres.

Acreage Equivalents in a Standard Section

The "AND" Rule

If a legal description contains the word "AND" (or a semicolon), it means you are dealing with two separate parcels of land that must be calculated individually and then added together.

Example 2: "The N 1/2 of the NW 1/4 of Section 4, AND the SE 1/4 of the SW 1/4 of Section 4."

Parcel 1: N 1/2 of the NW 1/4. (640 ÷ 4 ÷ 2 = 80 acres).
Parcel 2: SE 1/4 of the SW 1/4. (640 ÷ 4 ÷ 4 = 40 acres).
Total: 80 + 40 = 120 acres.

Application in Kansas Real Estate Practice

As a licensed Kansas real estate agent, you will encounter the Government Rectangular Survey System constantly. When drafting a purchase agreement, the Kansas Real Estate Commission (KREC) requires a precise legal description to identify the property. Before you even begin negotiating contingencies in purchase agreements or discussing financing options like fixed vs. adjustable interest rates, you must ensure the property is accurately identified on the contract.

While urban and suburban properties in cities like Overland Park or Lawrence are often described using the "Lot and Block" system (e.g., Lot 4, Block 2, Meadowbrook Subdivision), it is crucial to remember that the Lot and Block system rests upon the Government Rectangular Survey System. The subdivision itself is legally tied to a specific Section, Township, and Range.

Frequently Asked Questions (FAQs)

What Principal Meridian governs land descriptions in Kansas?

Almost all land in Kansas is surveyed from the Sixth Principal Meridian (6th PM), which was established in 1855 and runs North-South through the state, passing near Wichita.

How many acres are in a standard section of land?

A standard section of land contains exactly 640 acres. This is a fundamental number you must memorize for the Kansas real estate exam.

How do I calculate the acreage of "the S 1/2 of the SE 1/4 of the NW 1/4"?

Start with 640 acres and divide by the denominators: 640 ÷ 4 = 160. Then 160 ÷ 4 = 40. Then 40 ÷ 2 = 20. The parcel is 20 acres.

Why can't I just use a street address on a Kansas real estate contract?

A street address is considered an informal reference. Under Kansas law, a legally enforceable contract or deed requires a formal legal description (such as PLSS, Metes and Bounds, or Lot and Block) to precisely identify the exact boundaries of the land being transferred.

Is the metes and bounds system ever used in Kansas?

Yes. While the rectangular survey system is the primary framework, metes and bounds descriptions are frequently used in Kansas to describe irregular parcels of land or exact boundary lines of a property. However, these metes and bounds descriptions will almost always start at a "Point of Beginning" that is tied to a specific PLSS section monument.

Mastering land descriptions is just one piece of the puzzle when preparing for your licensing exam. For a comprehensive overview of all the topics you need to study, be sure to check out our Complete Kansas Exam Guide.