Centroid Method

puma	county_name
3401	Cook
3402	Cook
3403	Cook
3404	Cook
3405	Cook
3406	Cook
3407	Cook
3408	Cook
3409	Cook
3410	Cook
3411	Cook
3412	Cook
3413	Cook
3414	Cook
3501	Cook
3502	Cook
3503	Cook
3504	Cook
3505	Cook
3506	Cook
3507	Cook
3508	Cook
3509	Cook
3510	Cook
3511	Cook
3512	Cook
3513	Cook
3514	Cook
3515	Cook
3516	Cook
3517	Cook
3518	Cook
3519	Cook
3201	DuPage
3202	DuPage
3203	DuPage
3204	DuPage
3205	DuPage
3206	DuPage
3003	Kane
3004	Kane
3005	Kane
3006	Kane
3301	Lake
3302	Lake
3303	Lake
3304	Lake
3305	Lake
3001	McHenry
3002	McHenry
3101	Will
3102	Will
3103	Will
3104	Will

Allocation Factor (Geocorr method based on population. Allocation factor of 85% means 85% of a PUMA resides in that county; the remaining 15% lives in one or more other counties.Allocation factor of 100% means entire population of PUMA lives in that county.)

puma	county_name	afact
3401	Cook	1.0000
3402	Cook	1.0000
3403	Cook	1.0000
3404	Cook	1.0000
3405	Cook	1.0000
3406	Cook	1.0000
3407	Cook	1.0000
3408	Cook	1.0000
3409	Cook	1.0000
3410	Cook	1.0000
3411	Cook	1.0000
3412	Cook	1.0000
3413	Cook	1.0000
3414	Cook	1.0000
3501	Cook	1.0000
3502	Cook	1.0000
3503	Cook	1.0000
3504	Cook	1.0000
3505	Cook	1.0000
3506	Cook	1.0000
3507	Cook	1.0000
3508	Cook	1.0000
3509	Cook	1.0000
3510	Cook	1.0000
3511	Cook	1.0000
3512	Cook	1.0000
3513	Cook	1.0000
3514	Cook	1.0000
3515	Cook	1.0000
3516	Cook	1.0000
3517	Cook	1.0000
3518	Cook	1.0000
3519	Cook	1.0000
3201	DuPage	1.0000
3202	DuPage	1.0000
3203	DuPage	1.0000
3204	DuPage	1.0000
3205	DuPage	1.0000
3206	DuPage	1.0000
3003	Kane	1.0000
3004	Kane	1.0000
3005	Kane	1.0000
3006	Kane	0.2734
3301	Lake	1.0000
3302	Lake	1.0000
3303	Lake	1.0000
3304	Lake	1.0000
3305	Lake	1.0000
3001	McHenry	1.0000
3002	McHenry	1.0000
3006	McHenry	0.3102
3101	Will	0.6910
3102	Will	1.0000
3103	Will	1.0000
3104	Will	1.0000

McHenry: 3006 (assigned to Kane using the centroid method)

Puma 3006 is assigned to kane using the centroid method. With Geocorr 2000, it is assigned to both Kane and McHenry.