Population Trends & Components of Change

State of Massachusetts Regional Analytics
-- Population & Components of Change; 2010-15

Components of Change: 7/1/2010-6/30/2015

Natural Change	91,486
equals Births	363,092
less Deaths	271,606
Net Migration	144,696
equals net International Migration	195,369
plus net Domestic Migration	-50,673

The population of the State of Massachusetts changed from 6,565,036 on 2010 to 6,794,422 in 2015 -- a change of 229,386 (3.49%). This report provides a summary of how and why the population has changed during this period and what these factors suggest about future change.

Primary Contributing Factors to Change
The primary contributing factors resulting in population change are 1) natural change (births less deaths) and/or 2) net migration. Eight tables are presented below providing annual data for each component county of the state and state summary. The tables provide data on the total population, births, deaths, natural change (births less deaths), international migration, domestic migration and net migration.

From 2010 to 2015 (7/1/2010-6/30/2015), net migration (144,696) exceeded natural change (91,486); net migration has been the primary contributing factor for the state population change. Examine the state by county tables below to learn about how each county contributes to the state population growth or decline.

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Related Sections
• State of the States -- all states interactive table
• Metro S&O Reports -- all metros interactive table
• CountyTrends 2010-2015 -- all counties interactive table
• CountyTrends -- multi-sourced county data
• Regional Data Analytics Main

Table 1. Population
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Chg 10-15	%Chg 10-15
Barnstable County, MA	25001	P0000001	215,930	215,339	214,806	214,685	214,665	214,333	-1,597	-0.74
Berkshire County, MA	25003	P0000001	131,278	130,529	130,171	129,345	128,565	127,828	-3,450	-2.63
Bristol County, MA	25005	P0000001	549,174	549,226	551,009	552,184	554,626	556,772	7,598	1.38
Dukes County, MA	25007	P0000001	16,557	16,680	16,788	17,155	17,320	17,299	742	4.48
Essex County, MA	25009	P0000001	745,634	751,514	757,050	764,154	770,486	776,043	30,409	4.08
Franklin County, MA	25011	P0000001	71,310	71,606	71,506	71,080	70,927	70,601	-709	-0.99
Hampden County, MA	25013	P0000001	464,146	465,857	466,569	467,524	469,566	470,690	6,544	1.41
Hampshire County, MA	25015	P0000001	159,278	160,137	160,406	160,856	161,106	161,292	2,014	1.26
Middlesex County, MA	25017	P0000001	1,507,262	1,523,909	1,540,714	1,558,294	1,572,523	1,585,139	77,877	5.17
Nantucket County, MA	25019	P0000001	10,164	10,141	10,331	10,561	10,821	10,925	761	7.49
Norfolk County, MA	25021	P0000001	672,788	678,073	682,997	688,826	692,688	696,023	23,235	3.45
Plymouth County, MA	25023	P0000001	495,912	498,214	499,510	503,236	507,050	510,393	14,481	2.92
Suffolk County, MA	25025	P0000001	725,262	736,692	749,610	760,364	769,809	778,121	52,859	7.29
Worcester County, MA	25027	P0000001	800,341	803,880	806,313	810,546	814,972	818,963	18,622	2.33
Total		P0000001	6,565,036	6,611,797	6,657,780	6,708,810	6,755,124	6,794,422	229,386	3.49
Table 2. Births
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Barnstable County, MA	25001	B0000001	1,776	1,651	1,591	1,541	1,540	1,526	7,849
Berkshire County, MA	25003	B0000001	1,060	1,185	1,183	1,066	1,088	1,078	5,600
Bristol County, MA	25005	B0000001	5,916	5,826	5,799	5,647	5,564	5,714	28,550
Dukes County, MA	25007	B0000001	168	173	149	159	166	168	815
Essex County, MA	25009	B0000001	8,712	8,487	8,348	8,363	8,594	8,626	42,418
Franklin County, MA	25011	B0000001	608	635	673	621	590	602	3,121
Hampden County, MA	25013	B0000001	5,312	5,535	5,426	5,364	5,284	5,344	26,953
Hampshire County, MA	25015	B0000001	1,208	1,125	1,121	1,085	1,098	1,099	5,528
Middlesex County, MA	25017	B0000001	18,784	17,636	17,371	17,642	17,743	17,850	88,242
Nantucket County, MA	25019	B0000001	172	132	136	153	128	133	682
Norfolk County, MA	25021	B0000001	7,580	7,119	7,236	7,180	7,361	7,368	36,264
Plymouth County, MA	25023	B0000001	5,180	5,179	4,914	5,180	5,167	5,224	25,664
Suffolk County, MA	25025	B0000001	9,052	9,694	9,549	9,582	9,397	9,620	47,842
Worcester County, MA	25027	B0000001	9,060	8,808	8,712	8,582	8,710	8,752	43,564
Total		B0000001	74,588	73,185	72,208	72,165	72,430	73,104	363,092
Table 3. Deaths
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Barnstable County, MA	25001	D0000001	2,828	2,871	2,680	2,886	2,847	2,801	14,085
Berkshire County, MA	25003	D0000001	1,156	1,429	1,403	1,568	1,380	1,365	7,145
Bristol County, MA	25005	D0000001	4,364	5,109	4,916	5,131	5,088	5,077	25,321
Dukes County, MA	25007	D0000001	76	147	134	146	132	129	688
Essex County, MA	25009	D0000001	5,564	6,274	6,149	6,367	6,435	6,467	31,692
Franklin County, MA	25011	D0000001	568	670	643	690	656	649	3,308
Hampden County, MA	25013	D0000001	4,264	4,238	4,203	4,445	4,249	4,203	21,338
Hampshire County, MA	25015	D0000001	1,088	1,202	1,150	1,278	1,209	1,214	6,053
Middlesex County, MA	25017	D0000001	10,092	11,049	10,696	10,875	11,251	11,343	55,214
Nantucket County, MA	25019	D0000001	36	67	70	38	53	52	280
Norfolk County, MA	25021	D0000001	5,272	5,494	5,383	5,683	5,671	5,700	27,931
Plymouth County, MA	25023	D0000001	3,816	4,222	3,977	4,235	4,420	4,405	21,259
Suffolk County, MA	25025	D0000001	4,112	4,641	4,519	4,671	4,937	5,071	23,839
Worcester County, MA	25027	D0000001	5,932	6,603	6,495	6,776	6,764	6,815	33,453
Total		D0000001	49,168	54,016	52,418	54,789	55,092	55,291	271,606
Table 4. Natural Change
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Barnstable County, MA	25001	NC000001	-1,052	-1,220	-1,089	-1,345	-1,307	-1,275	-6,236
Berkshire County, MA	25003	NC000001	-96	-244	-220	-502	-292	-287	-1,545
Bristol County, MA	25005	NC000001	1,552	717	883	516	476	637	3,229
Dukes County, MA	25007	NC000001	92	26	15	13	34	39	127
Essex County, MA	25009	NC000001	3,148	2,213	2,199	1,996	2,159	2,159	10,726
Franklin County, MA	25011	NC000001	40	-35	30	-69	-66	-47	-187
Hampden County, MA	25013	NC000001	1,048	1,297	1,223	919	1,035	1,141	5,615
Hampshire County, MA	25015	NC000001	120	-77	-29	-193	-111	-115	-525
Middlesex County, MA	25017	NC000001	8,692	6,587	6,675	6,767	6,492	6,507	33,028
Nantucket County, MA	25019	NC000001	136	65	66	115	75	81	402
Norfolk County, MA	25021	NC000001	2,308	1,625	1,853	1,497	1,690	1,668	8,333
Plymouth County, MA	25023	NC000001	1,364	957	937	945	747	819	4,405
Suffolk County, MA	25025	NC000001	4,940	5,053	5,030	4,911	4,460	4,549	24,003
Worcester County, MA	25027	NC000001	3,128	2,205	2,217	1,806	1,946	1,937	10,111
Total		NC000001	25,420	19,169	19,790	17,376	17,338	17,813	91,486
Table 5. International Migration
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Barnstable County, MA	25001	MI000001	348	249	300	300	339	350	1,538
Berkshire County, MA	25003	MI000001	140	171	170	187	216	217	961
Bristol County, MA	25005	MI000001	400	832	918	959	1,152	1,151	5,012
Dukes County, MA	25007	MI000001	20	8	1	2	7	8	26
Essex County, MA	25009	MI000001	3,108	3,675	3,749	3,989	4,593	4,587	20,593
Franklin County, MA	25011	MI000001	104	103	114	124	142	142	625
Hampden County, MA	25013	MI000001	1,792	2,689	2,805	2,745	3,373	3,380	14,992
Hampshire County, MA	25015	MI000001	600	672	708	761	871	869	3,881
Middlesex County, MA	25017	MI000001	9,076	10,751	10,848	11,758	13,372	13,338	60,067
Nantucket County, MA	25019	MI000001	52	48	65	67	74	74	328
Norfolk County, MA	25021	MI000001	2,180	2,889	3,007	3,267	3,711	3,694	16,568
Plymouth County, MA	25023	MI000001	1,052	1,198	1,278	1,359	1,539	1,535	6,909
Suffolk County, MA	25025	MI000001	7,012	8,413	8,205	8,833	10,099	10,082	45,632
Worcester County, MA	25027	MI000001	2,376	3,246	3,322	3,500	4,088	4,081	18,237
Total		MI000001	28,260	34,944	35,490	37,851	43,576	43,508	195,369
Table 6. Domestic Migration
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Barnstable County, MA	25001	MD000001	848	563	270	723	970	368	2,894
Berkshire County, MA	25003	MD000001	36	-604	-310	-526	-600	-719	-2,759
Bristol County, MA	25005	MD000001	1,552	-1,317	10	-349	1,128	239	-289
Dukes County, MA	25007	MD000001	-4	98	94	344	125	-60	601
Essex County, MA	25009	MD000001	3,368	350	-392	935	89	-1,419	-437
Franklin County, MA	25011	MD000001	-352	270	-240	-454	-165	-361	-950
Hampden County, MA	25013	MD000001	-632	-2,048	-3,340	-2,521	-2,210	-3,206	-13,325
Hampshire County, MA	25015	MD000001	3,756	294	-403	-115	-479	-682	-1,385
Middlesex County, MA	25017	MD000001	-840	-34	-444	-200	-5,128	-6,655	-12,461
Nantucket County, MA	25019	MD000001	-232	-144	58	52	102	-47	21
Norfolk County, MA	25021	MD000001	3,552	975	152	1,097	-1,031	-2,013	-820
Plymouth County, MA	25023	MD000001	1,608	196	-914	1,204	1,617	735	2,838
Suffolk County, MA	25025	MD000001	600	-1,824	-281	-2,472	-5,067	-5,747	-15,391
Worcester County, MA	25027	MD000001	1,700	-1,631	-3,106	-1,190	-1,045	-2,238	-9,210
Total		MD000001	14,960	-4,856	-8,846	-3,472	-11,694	-21,805	-50,673
Table 7. Net Migration
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Barnstable County, MA	25001	MN000001	1,196	812	570	1,023	1,309	718	4,432
Berkshire County, MA	25003	MN000001	176	-433	-140	-339	-384	-502	-1,798
Bristol County, MA	25005	MN000001	1,952	-485	928	610	2,280	1,390	4,723
Dukes County, MA	25007	MN000001	16	106	95	346	132	-52	627
Essex County, MA	25009	MN000001	6,476	4,025	3,357	4,924	4,682	3,168	20,156
Franklin County, MA	25011	MN000001	-248	373	-126	-330	-23	-219	-325
Hampden County, MA	25013	MN000001	1,160	641	-535	224	1,163	174	1,667
Hampshire County, MA	25015	MN000001	4,356	966	305	646	392	187	2,496
Middlesex County, MA	25017	MN000001	8,236	10,717	10,404	11,558	8,244	6,683	47,606
Nantucket County, MA	25019	MN000001	-180	-96	123	119	176	27	349
Norfolk County, MA	25021	MN000001	5,732	3,864	3,159	4,364	2,680	1,681	15,748
Plymouth County, MA	25023	MN000001	2,660	1,394	364	2,563	3,156	2,270	9,747
Suffolk County, MA	25025	MN000001	7,612	6,589	7,924	6,361	5,032	4,335	30,241
Worcester County, MA	25027	MN000001	4,076	1,615	216	2,310	3,043	1,843	9,027
Total		MN000001	43,220	30,088	26,644	34,379	31,882	21,703	144,696
Table 8. Group Quarters
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Chg10-15	%Chg 10-15
Barnstable County, MA	25001	GQ000001	3,938	3,943	3,974	3,993	3,959	3,962	24	0.61
Berkshire County, MA	25003	GQ000001	6,292	6,139	6,128	6,024	6,042	6,056	-236	-3.75
Bristol County, MA	25005	GQ000001	16,535	16,351	16,636	16,079	16,425	16,432	-103	-0.62
Dukes County, MA	25007	GQ000001	143	142	142	138	141	141	-2	-1.40
Essex County, MA	25009	GQ000001	17,259	17,532	17,864	18,255	18,950	18,946	1,687	9.77
Franklin County, MA	25011	GQ000001	1,478	1,572	1,590	1,495	1,671	1,671	193	13.06
Hampden County, MA	25013	GQ000001	15,275	15,569	15,670	15,284	16,166	16,184	909	5.95
Hampshire County, MA	25015	GQ000001	22,002	22,293	22,097	22,472	22,625	22,613	611	2.78
Middlesex County, MA	25017	GQ000001	55,635	56,054	55,978	56,128	56,695	56,676	1,041	1.87
Nantucket County, MA	25019	GQ000001	59	60	60	58	57	57	-2	-3.39
Norfolk County, MA	25021	GQ000001	17,983	18,435	18,293	18,153	17,959	17,850	-133	-0.74
Plymouth County, MA	25023	GQ000001	11,970	12,343	12,081	12,035	12,399	12,286	316	2.64
Suffolk County, MA	25025	GQ000001	48,937	48,093	49,210	48,948	50,193	50,201	1,264	2.58
Worcester County, MA	25027	GQ000001	27,901	28,324	27,943	28,148	29,004	29,008	1,107	3.97
Total		GQ000001	245,407	246,850	247,666	247,210	252,286	252,083	6,676	2.72

Source: developed by ProximityOne based on Census Bureau and other data.
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