You can find out more about census tracts here. If you want a specific census tract map, try here.
California: Census tract ranked by highest percentage.

County	Census Tract	Population	Married couples	Unmarried Partners	Same Sex Couples	% Same-sex couples	Male couples	% Male couples	Female couples	% Female couples
Los Angeles	2227	246	1	1	1	50.00%	1	50.00%	-	0.00%
Napa	2009	1,096	-	2	1	50.00%	-	0.00%	1	50.00%
San Francisco	205	2,551	200	284	230	47.52%	207	42.77%	23	4.75%
San Francisco	170	3,775	371	419	336	42.53%	301	38.10%	35	4.43%
San Francisco	206	4,836	413	492	378	41.77%	313	34.59%	65	7.18%
San Francisco	169	2,995	174	260	181	41.71%	143	32.95%	38	8.76%
San Francisco	204	6,742	608	702	485	37.02%	412	31.45%	73	5.57%
San Francisco	203	3,145	208	245	163	35.98%	130	28.70%	33	7.28%
San Francisco	168	6,101	345	386	212	29.00%	176	24.08%	36	4.92%
Los Angeles	7005	7,994	632	510	311	27.23%	280	24.52%	31	2.71%
San Diego	7	3,414	295	255	145	26.36%	118	21.45%	27	4.91%
Sacramento	10	630	13	15	7	25.00%	7	25.00%	-	0.00%
San Francisco	216	3,880	541	274	198	24.29%	160	19.63%	38	4.66%
Los Angeles	7003	5,670	525	336	205	23.81%	182	21.14%	23	2.67%
San Francisco	202	6,188	474	336	190	23.46%	138	17.04%	52	6.42%
San Francisco	212	2,882	404	235	148	23.16%	115	18.00%	33	5.16%
San Francisco	167	4,701	378	322	145	20.71%	122	17.43%	23	3.29%
San Diego	6	2,963	268	193	91	19.74%	72	15.62%	19	4.12%
Los Angeles	7002	6,499	561	312	172	19.70%	154	17.64%	18	2.06%
Riverside	448.05	1,667	271	100	73	19.68%	67	18.06%	6	1.62%

California: Census tract ranked by total number of same-sex couples.

County	Census Tract	Population	Married couples	Unmarried Partners	Same Sex Couples	% Same-sex couples	Male couples	% Male couples	Female couples	% Female couples
San Francisco	204	6,742	608	702	485	37.02%	412	31.45%	73	5.57%
San Francisco	206	4,836	413	492	378	41.77%	313	34.59%	65	7.18%
San Francisco	170	3,775	371	419	336	42.53%	301	38.10%	35	4.43%
Los Angeles	7005	7,994	632	510	311	27.23%	280	24.52%	31	2.71%
San Francisco	205	2,551	200	284	230	47.52%	207	42.77%	23	4.75%
San Francisco	168	6,101	345	386	212	29.00%	176	24.08%	36	4.92%
Los Angeles	7003	5,670	525	336	205	23.81%	182	21.14%	23	2.67%
San Francisco	216	3,880	541	274	198	24.29%	160	19.63%	38	4.66%
San Francisco	202	6,188	474	336	190	23.46%	138	17.04%	52	6.42%
San Francisco	169	2,995	174	260	181	41.71%	143	32.95%	38	8.76%
Los Angeles	7002	6,499	561	312	172	19.70%	154	17.64%	18	2.06%
San Francisco	252	5,454	689	306	171	17.19%	90	9.05%	81	8.14%
Los Angeles	7004	5,296	570	294	164	18.98%	137	15.86%	27	3.13%
San Francisco	203	3,145	208	245	163	35.98%	130	28.70%	33	7.28%
San Francisco	207	5,427	477	365	156	18.53%	98	11.64%	58	6.89%
Los Angeles	1941	6,523	1,104	327	150	10.48%	136	9.50%	14	0.98%
San Francisco	307	6,367	1,264	239	150	9.98%	118	7.85%	32	2.13%
San Francisco	212	2,882	404	235	148	23.16%	115	18.00%	33	5.16%
San Francisco	215	5,195	661	321	147	14.97%	94	9.57%	53	5.40%
San Diego	7	3,414	295	255	145	26.36%	118	21.45%	27	4.91%
San Francisco	167	4,701	378	322	145	20.71%	122	17.43%	23	3.29%
Los Angeles	1942	5,154	718	338	145	13.73%	129	12.22%	16	1.52%
San Francisco	311	6,278	988	255	134	10.78%	83	6.68%	51	4.10%
Los Angeles	1944	5,747	641	271	133	14.58%	104	11.40%	29	3.18%
San Diego	3	4,446	442	291	129	17.60%	101	13.78%	28	3.82%