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Copy this in D3 and copy down and then across<br />
<br />
=IF(COUNTIF($A:$B,$A3)=COU<wbr />NTIF($A3:$<wbr />A3,$A3),SU<wbr />MIF($A:$B,<wbr />$A3,$C:$E)<wbr />,&quot;&quot;)
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Copy this in D3 and copy down and then across

=IF(COUNTIF($A:$B,$A3)=COUNTIF($A3:$A3,$A3),SUMIF($A:$B,$A3,$C:$E),"")

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Thanks ssaqibh.<br />
<br />
But it doesn't appear to sum where there are multiple postcodes.<br />
<br />
Can you attach the file?<br />
<br />
Thanks again,<br />
<br />
Greg
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Thanks ssaqibh.

But it doesn't appear to sum where there are multiple postcodes.

Can you attach the file?

Thanks again,

Greg

Q-28138893.xlsx

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Perfect!! Thanks heaps. &nbsp;Not sure what I did wrong but the file is perfect.
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Perfect!! Thanks heaps.  Not sure what I did wrong but the file is perfect.

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You're very welcome.<br />
<br />
I don't think you did anything 'wrong'<br />
<br />
The first suggestion was not correct &amp;&nbsp;did not address your requirements.
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You're very welcome.

I don't think you did anything 'wrong'

The first suggestion was not correct & did not address your requirements.

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<div class="content wysiwyg-content">
Column A contains postcode numbers. Column B contains suburb names where different suburb names may correspond to the same postcode number.<br />
Columns C, E, G, I. K and M may contain vales. The objective is to sum these values where they correspond with the same postcode number in column A as per examples in Columns D, F, H, J, L and N.<br />
<a href="https://filedb.experts-exchange.com/incoming/2013/05_w21/656591/Postcode-collation-example1.xlsx" target="_blank" class="file-inline" title="postcode example file (266 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Postcode-collation-example1.xlsx</a>
</div>
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Postcode-collation-example1.xlsx

Column A contains postcode numbers. Column B contains suburb names where different suburb names may correspond to the same postcode number.
Columns C, E, G, I. K and M may contain vales. The objective is to sum these values where they correspond with the same postcode number in column A as per examples in Columns D, F, H, J, L and N.

Sum 6 separate columns of numbers that correspond to the same ID number in column A.

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.