Here is a list of VanOstens listed in the Philadelphia City Directories. Hardcopies of the directories are available at the Historical Society of PA in Philadelphia. This is not an extensive list - just based on the notes I made during my visit there. There are many other directories for the years in between which I did not look at. Here you go:

From 1900 Philadelphia City Directory:
VanOsten, Adolph. Carpenter. h. 226 N Clarion
VanOsten, Jno T. Oiler. H. 4135 Ludlow
VanOsten, Jos. H. 620 Wood
VanOsten, Jos. B. Segarmkr. H. 2120 Newirk
VanOsten, Julia W. Wid. Jas. W. h. 936 S St Bernard
VanOsten, Marshall. Driver. H. 2236 N 27th
VanOsten, Stuart. Machinist. H. 711 N Markoe
VanOsten, Thos. Carpenter. h. 1984 Hunting Pk Ave
VanOsten, Wm. Liquors. 10 N 5th
VanOsten, Wm M. Motorman. H. 2236 N 27th

From 1860 Philadelphia City Directory:
VanOsten, Edward. Shoemaker. 1229 Coates
VanOsten, Hannah J. Dressmaker. 824 Arch
VanOsten James. Gilder. 304 Chestnut, h. 302 N 19th
VanOsten, James B. Com. Mer. 824 Arch
VanOsten, James W. Dentist. 815 Spruce
VanOsten, Joseph B. Artist. 302 N 19th
VanOsten, Joseph H. Machinist. Main (Hbg)
VanOsten, M.J. Artificial flowers. 29 s 4th
VanOsten, Samuel. Photographer. 513 N 19th
VanOsten, Thomas. Photographer. 513 S 19th
VanOsten, William. Hotel. 10 N 5th
VanOsten, William. US Mint. 302 N 19th

From 1855 Philadelphia City Directory:
VanOsten, J.W. Dentist. 176 S 3rd
VanOsten, M.J. Artificial flowermr. 9 ½ S 4th
VanOsten, William. US Mint. H. 19th ab Vine
VanOsten, William Jr. Hotel. 10 N 5th

From 1850 Philadelphia City Directory:
VanOsten, J.W. Dentist. 176 S 3rd
VanOsten, James B. Carp. 1 Lebanon Row
VanOsten, M.J. Artificial flowermaker. 9 ½ S 4th
VanOsten, Samuel. Mach. Callowhill n. Sch 2d
VanOsten, Thomas S. Photographist. 378 High
VanOsten, William. State. n. Sch 7th
VanOsten, William Jr. Oyster house. 488 Sassafras

From 1840 Philadelphia City Directory:
VanOsten, Daniel. Carpenter. 84 Mulberry
VanOsten, J.B. Carp. Sch 8th and Filbert, h. Sasafras ab. Sch 8th
VanOsten, M.J. Artificial flowermaker. 84 Mulberry
VanOsten, William. Carp. 4 Beach

From 1830 Philadelphia City Directory:
VanOsten, Daniel. House carp. 49 Mulberry
VanOsten, M.J. House carp. 49 Mulberry
VanOsten, William. House carp. Woglom’s Ct
VanOsten, William. Senr. Carp. 163 S 11th

From 1825 Philadelphia City Directory:
VanOsten, William. House carp. Woglon’s ct.
VanOsten, William Jr. House carp. Woglon’s ct.

No listings for “VanOsten” in 1800 Philadelphia City Directory.