Manhattan address algorithm

The Manhattan address algorithm refers to the formulas used to estimate closest east–west cross street for building numbers on north–south avenues in the New York City borough of Manhattan.[1][2]

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 "magic number" from the table below:

Street/Avenue Building No. Divisor Magic No. (unrounded result)
Avenue A All ÷20 +3
Avenue B All ÷20 +3
Avenue C All ÷20 +3
Avenue D All ÷20 +3
1st Ave All ÷20 +3
2nd Ave All ÷20 +3
3rd Ave All ÷20 +10
4th Ave All ÷20 +8
5th Ave 63–108 ÷20 +11 14.15–16.4
5th Ave 109–200 ÷20 +13 18.45–23
5th Ave 201–400 ÷20 +16 26.05–36
5th Ave 401–600 ÷20 +18 38.05–48
5th Ave 601–775 ÷20 +20 50.05–58.75
5th Ave 776–1286 ÷10 -18 59.6–110.6
5th Ave 1300–1500 ÷20 +45 110–120
5th Ave Above 2000 ÷20 +24 124+
6th Ave All ÷20 -12
7th Ave 1–1800 ÷20 +12 12.05–102
7th Ave Above 1800 ÷20 +20 110+
8th Ave All ÷20 +9
9th Ave All ÷20 +13
10th Ave All ÷20 +14
11th Ave All ÷20 +15
Amsterdam Ave All ÷20 +59
Audubon Ave All ÷20 +165
Ave of the Americas All ÷20 -12
Columbus Ave All ÷20 +60[3]
Broadway 1–754 (no 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 Ave All ÷20 +127
Edgecombe Ave All ÷20 +134
Ft. Washington Ave All ÷20 +158
Lenox Ave All ÷20 +110
Lexington Ave All ÷20 +22
Madison Ave All ÷20 +27
Manhattan Ave All ÷20 +100
Park Ave All ÷20 +34
Park Ave South All ÷20 +8
Pleasant Ave All ÷20 +101
Riverside Drive 1–567 ÷10 +72 72.1–128.7
Riverside Drive Above 567 ÷10 +78 134.7+
St. Nicholas Ave All ÷20 +110
Vanderbilt Ave All ÷20 +42
Wadsworth Ave All ÷20 +173
West End Ave All ÷20 +59
York Ave All ÷20 +4

See also

References

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