Notes:

Bolded: ACS 90% MOE crosses 0 (no data still with MOE)
Arlington County does not include Apartment/Multifamily residents; only single family or condos have bedroom information
All prepared Arlington County data are used in the tabulations. When calculating census tract and block group (bg) comparisons, only those data that are within a designated tract/bg are included. When geocoding addresses along the county boarder, rooftop coordinates can occur outside the county. When merging tract to coordinates, these properties would not receive a tract/BG ID number

County

5 year

Geography:	Arlington County, Virginia
Dataset: 2009-2013 5-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	106,740	191	116	60,145	46,595	NO
0 bedrooms	4,584	526	320	7,923	-3,339	NO
1 bedrooms	36,063	964	586	10,913	25,150	NO
2 bedrooms	31,633	1,062	646	17,151	14,482	NO
3 bedrooms	19,358	777	472	15,656	3,702	NO
4 bedrooms	10,186	539	328	5,789	4,397	NO
5 or more bedrooms	4,916	453	275	2,692	2,224	NO

Geography:	Arlington County, Virginia
Dataset: 2009 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	103,813	872	530	59,880	43,933	NO
0 bedrooms	4,163	1,167	709	8,841	-4,678	NO
1 bedrooms	33,195	2,573	1,564	10,704	22,491	NO
2 bedrooms	29,944	2,704	1,644	17,167	12,777	NO
3 bedrooms	20,512	1,877	1,141	15,428	5,084	NO
4 bedrooms	11,217	1,532	931	5,481	5,736	NO
5 or more bedrooms	4,782	1,195	726	2,259	2,523	NO

Geography:	Arlington County, Virginia
Dataset: 2010 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	105,490	619	376	59,817	45,673	NO
0 bedrooms	5,525	1,285	781	8,079	-2,554	NO
1 bedrooms	34,387	2,341	1,423	11,006	23,381	NO
2 bedrooms	31,471	2,815	1,711	17,120	14,351	NO
3 bedrooms	19,474	2,014	1,224	15,504	3,970	NO
4 bedrooms	10,493	1,473	895	5,501	4,992	NO
5 or more bedrooms	4,140	869	528	2,497	1,643	NO

Geography:	Arlington County, Virginia
Dataset: 2011 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	106,720	417	253	60,112	46,608	NO
0 bedrooms	3,390	1,521	925	7,807	-4,417	NO
1 bedrooms	38,636	3,683	2239	10,967	27,669	NO
2 bedrooms	32,616	3,120	1897	17,195	15,421	NO
3 bedrooms	18,329	2,211	1344	15,748	2,581	NO
4 bedrooms	8,640	1,232	749	5,712	2,928	NO
5 or more bedrooms	5,109	1,072	652	2,683	2,426	NO

Geography:	Arlington County, Virginia
Dataset: 2012 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	107,734	537	326	60,329	47,405	NO
0 bedrooms	4,202	1,278	777	7,545	-3,343	NO
1 bedrooms	38,677	2,471	1,502	10,946	27,731	NO
2 bedrooms	32,353	2,325	1,413	17,180	15,173	NO
3 bedrooms	18,751	1,502	913	15,801	2,950	NO
4 bedrooms	9,944	1,230	748	5,970	3,974	NO
5 or more bedrooms	3,807	724	440	2,887	920	NO

Geography:	Arlington County, Virginia
Dataset: 2013 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	109,689	504	306	60,589	49,100	NO
0 bedrooms	4,729	1,402	852	7,343	-2,614	NO
1 bedrooms	35,719	2,279	1,385	10,943	24,776	NO
2 bedrooms	34,198	2,771	1,684	17,093	17,105	NO
3 bedrooms	19,014	2,021	1,229	15,798	3,216	NO
4 bedrooms	10,359	1,308	795	6,280	4,079	NO
5 or more bedrooms	5,670	914	556	3,132	2,538	NO

Geography:	Arlington County, Virginia
Dataset: 2009-2013 5-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	106,740	191	60,145	46,595	NO
0 bedrooms	4.29%	0.49%	13.17%	-8.88%	NO
1 bedrooms	33.79%	0.91%	18.14%	15.64%	NO
2 bedrooms	29.64%	1.00%	28.52%	1.12%	NO
3 bedrooms	18.14%	0.73%	26.03%	-7.89%	NO
4 bedrooms	9.54%	0.51%	9.62%	-0.08%	YES
5 or more bedrooms	4.61%	0.42%	4.48%	0.13%	YES

Geography:	Arlington County, Virginia
Dataset: 2009 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	103,813	872	59,880	103,813	NO
0 bedrooms	4.01%	1.12%	14.76%	-10.75%	NO
1 bedrooms	31.98%	2.49%	17.88%	14.10%	NO
2 bedrooms	28.84%	2.62%	28.67%	0.18%	YES
3 bedrooms	19.76%	1.82%	25.76%	-6.01%	NO
4 bedrooms	10.81%	1.48%	9.15%	1.65%	NO
5 or more bedrooms	4.61%	1.15%	3.77%	0.83%	YES

Geography:	Arlington County, Virginia
Dataset: 2010 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	105,490	619	59,817	45,673	NO
0 bedrooms	5.24%	1.22%	13.51%	-8.27%	NO
1 bedrooms	32.60%	2.23%	18.40%	14.20%	NO
2 bedrooms	29.83%	2.67%	28.62%	1.21%	YES
3 bedrooms	18.46%	1.91%	25.92%	-7.46%	NO
4 bedrooms	9.95%	1.40%	9.20%	0.75%	YES
5 or more bedrooms	3.92%	0.82%	4.17%	-0.25%	YES

Geography:	Arlington County, Virginia
Dataset: 2011 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	106,720	417	60,112	46,608	NO
0 bedrooms	3.18%	1.43%	12.99%	-9.81%	NO
1 bedrooms	36.20%	3.45%	18.24%	17.96%	NO
2 bedrooms	30.56%	2.93%	28.60%	1.96%	YES
3 bedrooms	17.17%	2.07%	26.20%	-9.02%	NO
4 bedrooms	8.10%	1.15%	9.50%	-1.41%	NO
5 or more bedrooms	4.79%	1.00%	4.46%	0.32%	YES

Geography:	Arlington County, Virginia
Dataset: 2012 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	107,734	537	60,329	47,405	NO
0 bedrooms	3.90%	1.19%	12.51%	-8.61%	NO
1 bedrooms	35.90%	2.30%	18.14%	17.76%	NO
2 bedrooms	30.03%	2.16%	28.48%	1.55%	YES
3 bedrooms	17.40%	1.40%	26.19%	-8.79%	NO
4 bedrooms	9.23%	1.14%	9.90%	-0.67%	YES
5 or more bedrooms	3.53%	0.67%	4.79%	-1.25%	NO

Geography:	Arlington County, Virginia
Dataset: 2013 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from Arlington County Real Estate
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	109,689	504	60,589	49,100	NO
0 bedrooms	4.31%	1.28%	12.12%	-7.81%	NO
1 bedrooms	32.56%	2.08%	18.06%	14.50%	NO
2 bedrooms	31.18%	2.53%	28.21%	2.97%	NO
3 bedrooms	17.33%	1.84%	26.07%	-8.74%	NO
4 bedrooms	9.44%	1.19%	10.36%	-0.92%	YES
5 or more bedrooms	5.17%	0.83%	5.17%	0.00%	YES