Counting duplicates in Excel

Question

I have a list of postcodes that includes duplicates. I would like to find out how many instances of each postcode there are.

For example I would like this:

Answer 1

If you perhaps also want to eliminate all of the duplicates and keep only a single one of each

Change the formula =COUNTIF(A:A,A2) to =COUNIF($A$2:A2,A2) and drag the formula down. Then autofilter for anything greater than 1 and you can delete them.

Answer 2

Let excel do the work.

1. Select column
2. Select Data tab
3. Select Subtotal, then "count"
4. DONE

Adds it up for you and puts total

Trinidad Count  99
    Trinidad Colorado
    Trinidad Colorado
    Trinidad Colorado
    Trinidad Colorado
    Trinidad Colorado
    Trinidad Colorado
Trinidad Colorado Count 6
    Trinidad.
    Trinidad.
Trinidad. Count 2
    winnemucca
    Winnemucca
    Winnemucca
    Winnemucca
    Winnemucca
    winnemucca
    Winnemucca
    Winnemucca
    Winnemucca
    winnemucca
    Winnemucca
    Winnemucca
    Winnemucca
    Winnemucca
winnemucca Count    14

Answer 3

1. Highlight the column with the name
2. Data > Pivot Table and Pivot Chart
3. Next, Next layout
4. drag the column title to the row section
5. drag it again to the data section
6. Ok > Finish