Border States Quiz – How Much Do You Really Know?

This border states quiz looks at the US states that touch Canada or Mexico, from Maine and Alaska in the north to Texas, Arizona and California in the south. Ten questions show how much you really know.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Canada
How many US states border Canada?
Mexico
How many US states border Mexico?
Canada
Which state has the longest border with Canada?
Mexico
Which state has the longest border with Mexico?
Canada
Which New England state borders only one other US state?
Canada
The Northwest Angle, the northernmost point of the lower 48 states, belongs to which state?
Mexico
Which border city lies across from Ciudad Juárez?
Canada
Which border crossing links Detroit and Windsor?
Mexico
The busiest land border crossing in the Western Hemisphere connects San Diego with which city?
Canada
The long straight US-Canada border in the west follows which line of latitude?

Explanations: answer key for all 10 questions

Q1: How many US states border Canada?
Answer: 13
Thirteen states touch Canada, from Maine to Washington, plus Alaska. Some, like Michigan and Ohio, share a border across the Great Lakes.
Q2: How many US states border Mexico?
Answer: 4
California, Arizona, New Mexico and Texas border Mexico. Texas has the longest share, along the Rio Grande.
Q3: Which state has the longest border with Canada?
Answer: Alaska
Alaska's border with Canada's Yukon and British Columbia runs about 2,475 kilometers.
Q4: Which state has the longest border with Mexico?
Answer: Texas
The Texas-Mexico border follows the Rio Grande for about 2,000 kilometers, from El Paso to the Gulf of Mexico.
Q5: Which New England state borders only one other US state?
Answer: Maine
Maine touches only New Hampshire. The rest of its land border is shared with the Canadian provinces of Quebec and New Brunswick.
Q6: The Northwest Angle, the northernmost point of the lower 48 states, belongs to which state?
Answer: Minnesota
The Northwest Angle juts into Lake of the Woods and can only be reached by land by driving through Canada.
Q7: Which border city lies across from Ciudad Juárez?
Answer: El Paso
El Paso and Ciudad Juárez form one of the largest binational metropolitan areas in the world.
Q8: Which border crossing links Detroit and Windsor?
Answer: Ambassador Bridge
Opened in 1929, the Ambassador Bridge is one of the busiest trade crossings between the US and Canada.
Q9: The busiest land border crossing in the Western Hemisphere connects San Diego with which city?
Answer: Tijuana
The San Ysidro crossing handles tens of thousands of vehicles and pedestrians every day.
Q10: The long straight US-Canada border in the west follows which line of latitude?
Answer: 49th parallel
An 1818 treaty set the 49th parallel as the border from Lake of the Woods west to the Rockies, later extended to the Pacific.

Border States Quiz – Living on the Line

The US-Canada border is the longest international border in the world, about 8,891 kilometers including Alaska. The US-Mexico border runs about 3,145 kilometers from the Pacific to the Gulf of Mexico.

Border states share trade, culture and family ties with their neighbors. Detroit and Windsor, El Paso and Ciudad Juárez, and San Diego and Tijuana are linked by bridges and crossings used by millions every year, and some towns, like Derby Line in Vermont, sit right on the line.

What This Quiz Teaches

This quiz helps students and travelers see which states touch America's neighbors and where the busiest crossings are.

How many states border Canada and Mexico
Which state has each longest border
What the Northwest Angle is
Where the 49th parallel border runs
Which cities face each other across the line

Did You Know?

The Haskell Free Library sits on the US-Canada border, with a line on the floor.
Point Roberts, Washington, can only be reached by land through Canada.
Lake of the Woods has thousands of islands on both sides of the border.
The Rio Grande changes course, which once caused border disputes.
Idaho has the shortest border with Canada of any state, about 72 kilometers.