help with query to select counts

[Jakeman]

I want to select the number of records for each idnumber that exists. In the below example, there are three 2's, four 3's, and three 4's. I want to capture this information in a single query if possible.

I know how to capture a record count for a single idnumber, but I'm not sure how to do capture counts for multiple idnumbers in one query.

An example of the table:

____________________
| idnumber | title |
|-------------------
| 2        | ..... |
| 2        | ..... |
| 2        | ..... |
| 3        | ..... |
| 3        | ..... |
| 3        | ..... |
| 3        | ..... |
| 4        | ..... |
| 4        | ..... |
| 4        | ..... |

Any help is appreciated.