Manhattan address algorithm

The Manhattan address algorithm is a series of formulas used to estimate the closest east–west cross street for building numbers on north–south avenues in the New York City borough of Manhattan.

Algorithm

To find the approximate number of the closest cross street, divide the building number by a divisor (generally 20) and add (or subtract) the "tricky number" from the table below:

Street/Avenue	Building Template:№	Divisor	Tricky Template:№	(unrounded result)
Avenue A	All	$÷20$	$+3$
Avenue B	All	$÷20$	$+3$
Avenue C	All	$÷20$	$+3$
Avenue D	All	$÷20$	$+3$
1st Avenue	All	$÷20$	$+3$
2nd Avenue	All	$÷20$	$+3$
3rd Avenue	All	$÷20$	$+10$
4th Avenue	All	$÷20$	$+8$
5th Avenue	63–108	$÷20$	$+11$	14.15–16.4
5th Avenue	109–199	$÷20$	$+13$	18.45–23
5th Avenue	200–399	$÷20$	$+16$	26.05–36
5th Avenue	400–599	$÷20$	$+18$	38.05–48
5th Avenue	600–774	$÷20$	$+20$	50.05–58.75
5th Avenue	775–1286	$÷10$	$-18$	59.6–110.6
5th Avenue	1287–1499	$÷20$	$+45$	110–120
5th Avenue	Above 1500	$÷20$	$+24$	124+
6th Avenue	All	$÷20$	$-12$
7th Avenue	1–1800	$÷20$	$+12$	12.05–102
7th Avenue	Above 1800	$÷20$	$+20$	110+
8th Avenue	All	$÷20$	$+9$
9th Avenue	All	$÷20$	$+13$
10th Avenue	All	$÷20$	$+14$
11th Avenue	All	$÷20$	$+15$
Amsterdam Avenue	All	$÷20$	$+59$
Audubon Avenue	All	$÷20$	$+165$
Avenue of the Americas	All	$÷20$	$-12$
Columbus Avenue	All	$÷20$	$+60$
Broadway	1–754	(few numbered streets south of 8th)
Broadway	756–846	$÷20$	$-29$	8.8–13.3
Broadway	847–953	$÷20$	$-25$	17.35–22.65
Broadway	Above 953	$÷20$	$-31$	16.65+
Central Park West	All	$÷10$	$+60$
Convent Avenue	All	$÷20$	$+127$
East End Avenue	All	$÷20$	$+79$
Edgecombe Avenue	All	$÷20$	$+134$
Ft. Washington Avenue	All	$÷20$	$+158$
Lenox Avenue	All	$÷20$	$+110$
Lexington Avenue	All	$÷20$	$+22$
Madison Avenue	All	$÷20$	$+27$
Manhattan Avenue	All	$÷20$	$+100$
Park Avenue	All	$÷20$	$+34$
Park Avenue South	All	$÷20$	$+8$
Pleasant Avenue	All	$÷20$	$+101$
Riverside Drive	1–567	$÷10$	$+72$	72.1–128.7
Riverside Drive	Above 567	$÷10$	$+78$	134.7+
St. Nicholas Avenue	All	$÷20$	$+110$
Vanderbilt Avenue	All	$÷20$	$+42$
Wadsworth Avenue	All	$÷20$	$+173$
West End Avenue	All	$÷20$	$+59$
York Avenue	All	$÷20$	$+4$

Examples

For example, if you are at 62 Avenue B, $62÷20\approx 3$, then add the "tricky number" $3$ to give $6$. The nearest cross street to 62 Avenue B is East 6th Street.

If you are at 78 Riverside Drive, $78÷10\approx 8$, then add the "tricky number" $72$ to give $80$. The nearest cross street to 78 Riverside Drive is West 80th Street.

If you are at 501 5th Avenue, $501÷20\approx 25$, then add the "tricky number" $18$ to give $43$. The nearest cross street to 501 5th Avenue is actually 42nd Street, not 43rd Street, as the Manhattan address algorithm only gives approximate answers.

See also

• House numbering
• List of numbered streets in Manhattan
• Numbered street