Until the first of January 2010 Rohr was a municipality in the district of Aarau in the canton of Aargau in Switzerland.

Of the rest of the land, 22.7% is settled (buildings or roads) and the remainder (6.4%) is non-productive (rivers or lakes).

It consisted of the linear village of Rohr on a terrace above the Aare river valley.

The blazon of the municipal coat of arms is Argent three Bulrushes Vert fructed Sable issuant from Coupeaux of the second.

[3] The age distribution, as of 2008[update], in Rohr is; 339 children or 10.4% of the population are between 0 and 9 years old and 299 teenagers or 9.2% are between 10 and 19.

[9] In the 2007 federal election the most popular party was the SVP which received 40.8% of the vote.

[10] From the 2000 census[update], 743 or 28.0% are Roman Catholic, while 1,309 or 49.4% belonged to the Swiss Reformed Church.