in youth league it's usually 4.
in adult leagues there are usually 5-6.

Josh:
The number of bowlers on a team is completely dependent on the league you choose to bowl in. Depending on the bowling center, I have seen youth leagues with team of 1, 2, 3, 4, or 5.

Suggest you need to determine how many bowlers you want to bowl with on a team then find a bowling center that offers a league that will meet your needs.

Good luck.

Maybe a younger league is probably 4 to 5 people on one team. For an older league maybe 5 to 7 people on one team.

It really depends on the league. My league has 2 person teams but lower divisions have 4 person teams. I've always thought it was regularly either 3 or 4 but in certain competitions and leagues it's different. You just have to look around.

high school and college for combined boys and girls team 24 in hs and maybe 30 in college

If it's a youth or adult league, check your league rules.

If it's a USBC sanctioned tournament, 5 indivduals can bowl, but usually you can add a 6th member in case of injury.

In USBC Collegiate bowling, 5 bowlers bowl each game. On the roster the coach can have 7 bowlers listed to the roster.

4 or 5 usually

Anywhere between 4-6 bowlers for tournys and leauges