I don't believe that is a citrus. There is no wing before the main leaf and each set of leaflets appears to be coming from a central leaf stem and not the tree itself. That makes it a compound leaf. citrus do not have compound leaves

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These are citrus leave. The stems are not perfectly strait and only a small wing at the base of the leaf

Does not look to be in the citrus family to me. Try crushing a leaf and see if it smells like any citrus cultivar.

Patty S.

Looks like Ailanthus... a pernicious weed.

I just went out to my local community garden to look at our ailanthus tree. This is not ailanthus or citrus. Your plant is to nice looking for ailanthus altissima