It certainly should. Are you sure you didn't actually enter =
COUNTIF($A$2:$A$1209,$A$2)1?


--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"Carrie" wrote in message
...
I'm about to go nuts! I followed the directions for locating duplicate
numbers by conditional formatting. I put the formula in like it says, but
when I go to copy it to the rest of my column, it stays the same all the
way
down.

COUNTIF(A2:A1209,A2)1
Shouldn't it change to COUNTIF(A3:A1210,A3)1 on the next row?
If not, what am I doing wrong??