  We present a class of minimal $U(1)_X$ models as a plausible solution to the
$R_K$ anomaly that can also help reproduce the neutrino mixing pattern. The
symmetries and the corresponding $X$-charges of the fields are determined in a
bottom-up approach demanding both theoretical and experimental consistencies.
The breaking of $U(1)_X$ symmetry results in a massive $Z^{\prime}$, whose
couplings with leptons and quarks are necessarily non-universal to address the
$R_K$ anomaly. In the process, an additional Higgs doublet is introduced to
generate quark mixings. The mixings in the neutrino sector are generated
through Type-I seesaw mechanism by the addition of three right handed neutrinos
and a scalar singlet. The $Z^{\prime}$ can be probed with a few hundred
fb$^{-1}$ of integrated luminosity at the 13 TeV LHC in the di-muon channel.
