# count(...)

### count(...)

Returns a count of a given set of records

Works with the following datatypes:

This function works with 2.0 and 2.1 endpoint(s). What does this mean? »

The count(...) function is most commonly used in $select aggregations to return the count of a set of values. For example, to fetch the total number of employees of the City of Chicago: https://data.cityofchicago.org/resource/tt4n-kn4t.json?$select=count(annual_salary)

It can also be used in $group aggregations, like this one to get the count of employees by job type: https://data.cityofchicago.org/resource/tt4n-kn4t.json?$select=position_title,count(annual_salary)&\$group=position_title