Counting number of records for specific ranges sql server

I am trying to write a query to count the number of records based on a number of different ranges.

I have success with using union, but I feel there is a better way to do it.

Here is what I've done:

select count(col1) as range1
from tbl1
where col1 <= 15000
union
select count(col1) as range2
from tbl1
where col1 > 15001 and col1 <= 30000
union
select count(col1) as range3
from tbl1
where col1 > 30001 and col1 <= 45000
etc...

I am using sql server 2008. Like I stated above, I'm positive there is a better way to do this, maybe something like this: sql count,

EDIT: Yes, the database is sql 2008, and the answers below work exactly as needed. I forgot to mention that I'm actually reading a JSON file that has been serialized via coldfusion serializeJSON. So in the db, everything below worked perfectly, but coldfusion query of queries doesn't support the CASE statement, or it doesn't appear to.