Alex Rodriguez has crushed the most career home runs by a player younger than 32, with 499 homers.

Interpreted as:

most home runs by a player before age 32

	NAME	HR	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Alex Rodriguez A. Rodriguez	499	1,847	7,143	1,454	2,183	389	26	1,449	878	119	1,482	252	62	8,227	4,121	914	16	71	63	169	.306	.387	.577	.964
2	Jimmie Foxx J. Foxx	464	1,834	6,583	1,485	2,216	377	112	1,627	1,197	11	1,007	80		7,858	4,209	953	67			17	.337	.439	.639	1.079
3	Ken Griffey Jr. K. Griffey Jr.	460	1,791	6,716	1,220	1,987	362	35	1,335	885	60	1,173	175	64	7,736	3,799	857	7	68	193	124	.296	.379	.566	.945
4	Albert Pujols A. Pujols	445	1,705	6,312	1,291	2,073	455	15	1,329	975	77	704	84	35	7,433	3,893	915	1	68	251	232	.328	.420	.617	1.037
5	Eddie Mathews E. Mathews	422	1,792	6,549	1,220	1,834	275	65	1,167	1,154	19	1,098	63	35	7,799	3,505	762	31	46	76	96	.280	.387	.535	.922
6	Mickey Mantle M. Mantle	419	1,740	6,067	1,380	1,875	264	67	1,187	1,291	10	1,250	134	34	7,412	3,530	750	13	31	82	67	.309	.429	.582	1.011
7	Frank Robinson F. Robinson	399	1,757	6,474	1,235	1,978	373	57	1,208	843	135	946	170	67	7,528	3,662	829	13	63	150	175	.306	.393	.566	.959
8	Hank Aaron H. Aaron	398	1,806	7,080	1,290	2,266	391	80	1,305	663	21	734	149	45	7,855	4,011	869	19	72	143	195	.320	.376	.567	.943
9	Juan Gonzalez J. Gonzalez	397	1,503	5,824	957	1,727	346	22	1,282	417	56	1,125	23	17	6,374	3,308	765	2	75	71	160	.297	.345	.568	.913
10	Harmon Killebrew H. Killebrew	393	1,504	5,180	879	1,356	188	17	1,001	921	38	1,141	7	10	6,184	2,757	598	0	45	80	132	.262	.374	.532	.907
11	Miguel Cabrera M. Cabrera	392	1,829	6,870	1,171	2,204	468	15	1,378	864	50	1,323	38	19	7,857	3,878	875	5	68	191	236	.321	.397	.564	.962
12	Mel Ott M. Ott	388	2,015	7,080	1,421	2,216	386	66	1,468	1,240	44	616	68		8,455	3,898	840	91			14	.313	.418	.551	.969
13	Sammy Sosa S. Sosa	386	1,565	5,893	947	1,606	244	36	1,079	519	38	1,537	231	103	6,513	3,080	666	17	46	83	133	.273	.333	.523	.856
14	Willie Mays W. Mays	373	1,560	5,960	1,158	1,872	305	100	1,089	743	24	686	241	73	6,780	3,496	778	1	52	107	140	.314	.389	.587	.976
15	Andruw Jones A. Jones	372	1,841	6,635	1,075	1,724	342	35	1,135	749	85	1,474	138	56	7,538	3,252	749	6	63	66	165	.260	.340	.490	.830
16	Mike Trout M. Trout	368	1,488	5,397	1,106	1,623	310	52	940	964	99	1,456	206	37	6,515	3,141	730	0	55	119	67	.301	.412	.582	.994
17	Adam Dunn A. Dunn	365	1,570	5,390	901	1,312	282	10	922	1,065	75	1,809	59	22	6,561	2,709	657	2	29	107	85	.243	.374	.503	.876
18	Manny Ramirez M. Ramirez	361	1,431	5,186	992	1,650	351	14	1,175	822	62	1,143	32	28	6,126	3,112	726	2	54	121	147	.318	.414	.600	1.014
19	Babe Ruth B. Ruth	356	1,351	4,421	1,124	1,539	312	90	1,097	1,083	30	744	85		5,593	3,099	758	59				.348	.479	.701	1.180
20	Lou Gehrig L. Gehrig	355	1,591	5,905	1,378	2,026	408	133	1,486	1,053	26	591	85		7,086	3,765	896	102				.343	.445	.638	1.082
21	Ralph Kiner R. Kiner	351	1,359	4,884	915	1,373	203	39	960	946	24	708	22	3	5,866	2,707	593	9	3		120	.281	.400	.554	.954
22	Giancarlo Stanton G. Stanton	347	1,324	4,839	762	1,299	265	11	893	647	49	1,559	42	15	5,568	2,627	623	0	33	81	117	.268	.358	.543	.901
23	Vladimir Guerrero V. Guerrero	338	1,457	5,502	952	1,786	328	39	1,052	544	70	674	166	80	6,159	3,206	705	0	43	195	173	.325	.390	.583	.972
24	Bryce Harper B. Harper	336	1,653	5,934	1,082	1,670	369	24	976	1,035	46	1,533	140	50	7,085	3,095	729	13	57	131	134	.281	.389	.522	.911
25	Ernie Banks E. Banks	335	1,370	5,280	839	1,520	230	65	962	482	36	646	41	41	5,862	2,885	630	10	54	119	123	.288	.348	.546	.895