Does anyone know at what age Shri Krishna left Vrindavan?
Are there any scriptural references available for this?
Lord Krishna Stayed in Vrindavan for eleven years.
Uddhava while answering the questions asked by Vidura says this verse in 3rd canto of Shrimad-Bhagavatam.
tato nanda-vrajam itaḥ
pitrā kaṁsād vibibhyatā
ekādaśa samās tatra
gūḍhārciḥ sa-balo ’vasat
Thereafter, His father, being afraid of Kaṁsa, brought Him to the cow pastures of Mahārāja Nanda, and there He lived for eleven years like a covered flame with His elder brother, Baladeva.