This is a list of the largest urban agglomerations in North America. It includes the 50 most populated urban agglomerations as determined by either CityPopulation.de or Demographia. Please note that Demographia's analytical tool is the "urban area" which may be considered as a narrower construct than the "urban agglomeration" which often include more peripheral suburbs.

Name	Main Country	Rank	City Population estimate[1]	Rank	Demographia estimate[2]
Mexico City	Mexico	1	24,900,000	1	21,905,000
New York City	USA	2	23,100,000	2	21,396,000
Los Angeles	USA	3	17,700,000	3	15,587,000
Chicago	USA	4	9,900,000	4	8,954,000
Washington	USA	5	8,800,000	5	7,853,000
San Francisco	USA	6	7,950,000	8	6,844,000
Boston	USA	7	7,850,000	6	7,429,000
Dallas	USA	8	7,550,000	7	6,979,000
Philadelphia	USA	9	7,550,000	12	5,795,000
Toronto	Canada	10	7,550,000	9	6,837,000
Houston	USA	11	7,050,000	10	6,703,000
Miami	USA	12	6,450,000	11	6,139,000
Atlanta	USA	13	6,100,000	13	5,702,000
Detroit	USA	14	5,850,000	18	4,258,000
Monterrey	Mexico	15	5,850,000	14	4,674,000
Guadalajara	Mexico	16	5,750,000	16	4,401,000
Phoenix	USA	17	4,825,000	15	4,617,000
Tampa	USA	18	4,750,000	21	3,203,000
Seattle	USA	19	4,625,000	19	4,001,000
Montréal	Canada	20	4,325,000	20	3,750,000
Puebla	Mexico	21	4,175,000	34	2,106,000
Santo Domingo	Dominican Republic	22	4,175,000	17	4,345,000
Denver	USA	23	3,950,000	30	2,308,000
Orlando	USA	24	3,725,000	23	3,075,000
Port-au-Prince	Haiti	25	3,525,000	45	1,712,000
Guatemala City	Guatemala	26	3,325,000	27	2,765,000
Minneapolis	USA	27	3,300,000	26	2,796,000
San Diego	USA	28	3,300,000	22	3,078,000
Cleveland	USA	29	3,100,000	25	2,871,000
Vancouver	Canada	30	3,025,000	28	2,484,000
Cincinnati	USA	31	2,825,000	47	1,698,000
Toluca	Mexico	32	2,650,000	49	1,672,000
Salt Lake City	USA	33	2,625,000	29	2,463,000
Charlotte	USA	34	2,575,000	24	2,879,000
Portland	USA	35	2,500,000	33	2,117,000
San José	Costa Rica	36	2,425,000	35	2,106,000
Las Vegas	USA	37	2,375,000	31	2,260,000
Saint Louis	USA	38	2,350,000	32	2,247,000
San Antonio	USA	39	2,325,000	36	2,088,000
Havana	Cuba	40	2,225,000	42	1,752,000
León	Mexico	41	2,225,000	53	1,568,000
Tijuana	Mexico	42	2,200,000	46	1,712,000
Austin	USA	43	2,175,000	39	1,943,000
Sacramento	USA	44	2,175,000	38	1,976,000
Indianapolis	USA	45	2,100,000	44	1,733,000
Kansas City	USA	46	2,100,000	41	1,794,000
Pittsburgh	USA	47	2,075,000	43	1,738,000
Jacksonville	USA	48	2,025,000	56	1,306,000
San Salvador	El Salvador	49	1,930,000	48	1,677,000
San Juan	USA	50	1,910,000	40	1,846,000
Panama City	Panama	57	1,620,000	37	2,067,000
Columbus	USA	51	1,840,000	50	1,599,000