The area of the hundred was described by Wilhelm Tham in 1850 as consisting of mostly unforested fields with occasional swampy areas around the streams which flow into the Fyris or Lake Ekoln.
The hundred consisted of the parishes of Bondkyrka, Börje, Jumkil, Läby, Näs and Vänge.
In the 19th and early 20th centuries it consisted of the parishes of Bondkyrka, Börje, Uppsala-Näs, Vänge, Läby, and one half of Jumkil, of which the other half belonged to Bälinge Hundred.
The antiquities in Ulleråker Hundred were described by the antiquarian Johan Peringskiöld in his large, illustrated work Monumenta ullerakeriensia, published in 1719.
The first element is the genitive case of the name of the Norse god Ullr.