The solution-mediated syntheses and single crystal structures of (N<sub>2</sub>C<sub>6</sub>H<sub>14</sub>)·Zn(HPO<sub>4</sub>)<sub>2</sub>·H<sub>2</sub>O (I), H<sub>3</sub>N(CH<sub>2</sub>)<sub>3</sub>NH<sub>3</sub>·Zn<sub>2</sub>(HPO<sub>4</sub>)<sub>3</sub> (II), and (N<sub>2</sub>C<sub>6</sub>H<sub>14</sub>)·Zn<sub>3</sub>(HPO<sub>4</sub>)<sub>4</sub> (III) are described. These phases contain vertex-sharing Zn0<sub>4</sub> and HP0<sub>4</sub> tetrahedra, accompanied by doubly- protonated organic cations. Despite their formal chemical relationship, as members of the series of t·Zn<sub>n</sub>(HP0<sub>4</sub>)<sub>n+1</sub> (t= template, n = 1-3), these phases adopt fimdamentally different crystal structures, as one-dimensional, two-dimensional, and three-dimensional Zn0<sub>4</sub>/HP0<sub>4</sub> networks, for I, II, and III respectively. Similarities and differences to some other zinc phosphates are briefly discussed. Crystal data: (N<sub>2</sub>C<sub>6</sub>H<sub>14</sub>)·Zn(HP0<sub>4</sub>)<sub>2</sub>·H<sub>2</sub>0, M<sub>r</sub> = 389.54, monoclinic, space group P2<sub>1</sub>/n (No. 14), a = 9.864 (4) Å, b = 8.679 (4) Å, c = 15.780 (3) Å, β = 106.86 (2)°, V= 1294.2 (8) Å<sup>3</sup>, Z = 4, R(F) = 4.58%, R<sub>W</sub>(F) = 5.28% [1055 reflections with I >3σ(I)]. H<sub>3</sub>N(CH<sub>2</sub>)<sub>3</sub>NH<sub>3</sub>·Zn<sub>2</sub>(HP0<sub>4</sub>)<sub>3</sub>, M<sub>r</sub> = 494.84, monoclinic, space group P2<sub>1</sub>/c (No. 14), a= 8.593 (2)Å, b= 9.602 (2)Å, c= 17.001 (3)Å, β= 93.571 (8)°, V = 1400.0 (5) Å<sup>3</sup>, Z = 4, R(F) = 4.09%, R<sub>W</sub>(F) = 4.81% [2794 reflections with I > 3σ (I)]. (N<sub>2</sub>C<sub>6</sub>H<sub>14</sub>)·Zn<sub>3</sub>(HP0<sub>4</sub>)<sub>4</sub>, M<sub>r</sub>= 694.25, monoclinic, space group P2<sub>1</sub>/n (No. 14), a = 9.535 (2) Å, b = 23.246 (4)Å, c= 9.587 (2)Å, β= 117.74 (2)°, V= 1880.8 (8) Å<sup>3</sup>, Z = 4, R(F) = 3.23%, R<sub>W</sub>(F) = 3.89% [4255 reflections with 1> 3σ(I)].